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| The best term to descrie the application of scientific principles and new technologies to agriculture is… |
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| ___________ is defined as the application of science to solve a problem. |
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| Which step of the scientific method encompasses deciding specifically what is it you wish to find out? |
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| Which step of the scientific method encompasses reading up on and becoming informed about the topic? |
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| Which step in the scientific method includes developing a statement to be proven or disproven? |
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| Which step of the scientific method includes developing a plan for carrying out the project? |
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| Which step of the scientific method includes observing what takes place and recording what you measure or observe? |
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| Which step of the scientific method includes making necessary calculations, and determining if the information allows you to accept or reject the hypothesis? |
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| An example of a basic science is |
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| An example of an applied science is |
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| One relationship of agriscience with many other sciences is that |
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| Agriscience is the application of many other sciences |
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| The career and job outlook in agriscience is.. |
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| All stated answers are correct |
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| The best term to describe a proposal intended to explain certain facts or observations is.. |
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| The idea behind a(an) _____________ is to see what happen if… |
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| Researchers who conduct ________ attempt to answer scientific questions without having an immediate use for the answer. |
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| Researchers who conduct ___________ seek to resolve a specific questions with the results being used immediately to identify solutions. |
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| Which of the following would be considered basic research? |
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| Determining the structure of an atom |
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| Which of the following would be considered applied research? |
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| Affect of feed additives on livestock growth |
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| Which of the following would be considered a good resource for a literature review? |
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| The best term to describe the group in an experiment that is normal or unaffected by the researcher is… |
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| The term to best describe the group changed by the researcher is… |
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| The term best used to describe the variable changed by the researcher is |
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| The term best used to describe the variable that changes as a result of the experiment is… |
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| Which of the following is not a quantitative variable? |
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| Which of the following is a qualitative variable? |
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| Which section of the scientific report contains the statement of the problem, background, and objectives? |
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| Which section of the scientific report contains tables and graphs? |
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| Which section of the scientific report contains a list of supplies needed? |
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| John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the control group. |
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| John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the experimental group. |
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| John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the independant variable. |
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Definition
| The energy drink or lack thereof |
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Term
| John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. Identify the dependant variable. |
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Definition
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| John thinks that an energy drink will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the energy drink to drink while they work. Group B is not given the energy drink. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks. What should John's conclusion be? |
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Definition
| The energy drink did not increase the productivity of workers |
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Term
| Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the control group. |
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Definition
| The side of the shower sprayed with water |
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| Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the independant variable. |
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Definition
| The solution sprayed on the shower |
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Term
| Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. Identify the dependant variable. |
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Definition
| The amount of green slime |
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Term
| Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. What should Fred's conclusion be? |
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Definition
| The coconut juice did not get rid of the green slime. |
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Term
| Fred notices that his shower is covered in a strange green slime. His friend Joe tells him that coconut juice will get rid of the green slime. Fred decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. How could Fred improve this experiment? |
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Definition
| All could improve the experiment |
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Term
| Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the control group. |
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Definition
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| Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the experimental group. |
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Definition
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| Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the independant variable. |
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Definition
| Whether or not the mice were microwaved |
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Term
| Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. Identify the dependant variable. |
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Definition
| The ability to move the wood block |
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Term
| Larry believes that mice exposed to microwaves will become extra strong . He decides to perform this experiment by placing 10 mice in a microwave for 10 seconds. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. He found 5 out of the 10 microwaved mice were able to push the block away. 8 out of the 10 non-microwaved mice were able to do the same. What should Larry's conclusion be. |
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Definition
| The non-microwaved mice were stronger |
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Term
| Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the control group. |
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Definition
| The subject sprinkled with the original itching powder |
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Term
| Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the experimental group. |
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Definition
| The subject sprinkled with the experimental itch powder |
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Term
| Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the independant variable. |
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Definition
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| Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Identify the dependant variable. |
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Definition
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Term
| Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. What should Hunter's conclusion be? |
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Definition
| The experimental itching power makes subject itch longer. |
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Term
| Hunter was told that a certain itching powder was the newest, best thing on the market; it even claims to cause 50% longer lasting itches. Interested in this product, he buys the itching powder and compares it to his usual product. One test subject (A) is sprinkled with the original itching powder, and another test subject (B) was sprinkled with the experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. How can this experiment be improved? |
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Definition
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Term
| The scientific method was developed to help scientists organize the process of solving problems. |
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Definition
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| Which of these is not a step of the scientific method? |
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Definition
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| Which of these words would you NOT associate with the scientific method? |
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Definition
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| Which of these would be called results? |
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Definition
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Term
| What do you do to test a hypothesis? |
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Definition
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| A control group is used as a comparison to the group where things (variables) are changing. |
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Definition
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| An independent variable is a factor that changes because of procedures conducted on the dependent variable. |
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Term
| Which of the following best explains why a student researching genetics should use the most recent textbooks available? |
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Definition
| New discoveries frequently add to older knowledge in genetics |
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| In 1928, the scientist Alexander Fleming was trying to grow the bacterium Staphylococcus, and by chance, discovered that it would not grow in the presence of a mold that he named Penicillium. In 1939, Ernst Chain and Howard Florey purified penicillin, and in 1941, penicillin was first used to treat bacterial diseases. In 1945, Alexander Fleming, Ernst Chain, and Howard Florey received the Nobel Prize in medicine for the discovery and isolation of penicillin. These facts show that — |
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Definition
| The scientific process often requires the efforts of many people working together |
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Term
| A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and left them together in full sunlight. He gave each plant the same amount of water and charted the growth of each plant stem. What is the independent variable in this experiment? |
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Definition
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Term
| A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and left them together in full sunlight. He gave each plant the same amount of water and charted the growth of each plant stem. What is the dependant variable in this experiment? |
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| In 1869, DNA was discovered within the nuclei of cells. By the 1940s, scientists knew that chromosomes were made of both DNA and protein but did not know which was the genetic material of cells. In the 1950s, scientists demonstrated that DNA is the material responsible for heredity. In 1953, using information collected by other scientists, an American biologist and an English physicist built a three-dimensional model of DNA. These discoveries best illustrate the importance of — |
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Definition
| Collaborative efforts among scientists |
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Term
| Harvester ants often strip a bush of all of its leaves. Some people believe this helps the plant grow thicker, healthier stems. In an experiment, a student stripped off all the leaves from a set of plants. In a second set of identical plants, the student allowed ants to strip off the plants’ leaves. In order to improve this experimental design, it is most important to add a set of plants — |
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Definition
| With its leaves left intact |
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Term
| Two plant species found in a dry region of the western United States exhibit vastly different abilities to survive. Species A has very slow stem growth and few leaves but is very abundant. Species B has rapid stem growth and many leaves but is very rare. Which hypothesis is most likely supported by this information? |
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Definition
| Reduced stem growth may give species A an advantage over species B |
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Term
| Orchids were studied to determine if the amount of humidity affected the flowering of these plants. Which of these was the independent variable in this study? |
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Definition
| The percentage of humidity |
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Term
| A biology class of 24 students decides to measure the height of each student and then calculate the average height for the class. Which of these is a possible source of error in this activity? |
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Definition
| The accuracy of making and recording measurements |
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Term
| If a student needs to do research on heredity for a science project, which of these sources is the most reliable resource? |
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Definition
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Term
| Which question cannot be answered scientifically because the quantity cannot actually be measured? |
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Definition
| How happy is a chimp when it finds it's favorite food? |
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| Richard was observing black swallowtail butterflies in the field. Which one of these is an observation he made about a black swallowtail butterfly? |
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Definition
| The black swallowtail laid its eggs on a prasley plant. |
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Term
| Which of the following methods would provide the most accurate information for students collecting data about local attitudes concerning the use of alternative fuels for automobiles? |
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Definition
| Take an opinion poll of drivers |
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Term
| Which sentence best states the importance of using control groups? |
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Definition
| Control groups allow for comparison between subjects receiving a treatment and subjects receiving no treatment |
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| A biology class wanted to develop a research project to predict the effects of a new highway on wildflower species found in the Piedmont region of Virginia. The class could best conduct such a study by sampling flowers found in the highway construction area — |
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Definition
| Both before and after construction is completed |
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Term
| The most valid and reliable test of the hypothesis, more pine seeds germinate after a forest fire, would include an experimental group of pine seeds that was recovered from a fire area and pine seeds that were — |
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Definition
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| Ultimately, all scientific knowledge comes from: |
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Definition
| Experimentation and Observation |
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| A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. Which of the following is the independent (manipulated) variable in the experiment? |
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| A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. The orchard sprayed with the chemical yeilds an average of 60 apples per tree, the other orchard yields an average of 40 apples per tree. Based on the data, the scientist would: |
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Definition
| Determine that the chemical increases apple yield |
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. Which of the following would be the most appropriate title for the experiment? |
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Definition
| The Effect of Floor Waxes on the Number of Tile Scratches. |
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the independant variable. |
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Definition
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the dependant variable. |
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Definition
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the item(s) held constant. |
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Definition
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. Identify the control. |
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Definition
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. The 5 sections coated with Tough Stuff had a total of 12 scratches, the 5 sections coated with Steel Seal had a total of 23 scratches and the untreated sections had a total of 47 scratches. What should be the researcher's conclusion? |
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Definition
| Tough Stuff was most effective at preventing scratches |
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. Which of the following would be an appropriate hypothesis? |
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Definition
| All of the answers are correct |
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What would be the most appropriate title for this experiement? |
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Definition
| The Effect of Different Aged Compost on Bean Plant Growth. |
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What is John's hypothesis? |
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Definition
| If older compost is applied, then plan growth will be increased. |
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What is the independant variable? |
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Definition
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What is the dependant variable? |
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Definition
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. Which of the following was a constant in this experiment? |
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Definition
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. Which of the following was not a constant in this experiment? |
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Definition
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. The average height of the plants in flat A was 12 cm, the average height of plants in flat B was 18 cm and the average hight of plants in flat C was 8 cm. Was John's hypothesis correct? |
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Definition
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. Is the dependant variable data Allen is gathering quantitative or qualitative? |
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Definition
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Term
| A shopping mall wanted to determine whether the more expensive "Tough Stuff" floor wax was better then the cheaper "Steel Seal" floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of the 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections recieved no wax. After three weeks, the number of scratches in each of the test sections was counted. Was the data gathered in this research qualitative or quantitative? |
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Definition
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. Was the data gathered in John's research qualitative or quantitative? |
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Definition
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. Which of the following would be the most appropriate title for the experiment? |
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Definition
| The Effectiveness of Various Metals on Preventing the Rusting of Iron |
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is Allen's hypothesis? |
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Definition
| If the chemical activity of the metallic wrapper is increased, then less rusting will occur. |
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is the independant variable? |
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Definition
| Type of metallic wrapping strip |
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What was the dependant variable? |
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Definition
| Amount of rust, color of water |
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What are the constants in this experiment? |
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Definition
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. Which of the following is not a constant in this experiment? |
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Definition
| Type of metallic wrapping strip |
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Term
| After learning about recycling, members of John's biology class investigated the effect of various recycled products on plant growth. John's lab group compared the effect of the different-aged grass compost on bean plants. Because decomposition is necessary for release of nutrients, the group hypothesized that older grass compost would produce taller bean plants. Three flats of bean plants (25 plants/flat) were grown for 5 days. The plants were then fertilized as follows: (a) Flat A: 450 g of 3-month old compost, (b) Flat B: 450 g of 6-month old compost, and (c) Flat C: 0 g compost. The plants recieved the same amount of sunlight and water each day. At the end of 30 days the group recorded the height of the plants in cm. What was the control in this experiment? |
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Definition
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Term
| In chemistry class, Allen determined the effectiveness of various metals in releasing hydrogen gas from hydrochloric acid. Several weeks later, Allen read that a utilities company was burying lead next to iron pipes to prevent rusting. Allen hypothesized that less rusting would occur with the more active metals. He placed the following into 4 seperate beakers of water: (a) 1 iron nail, (b) 1 iron nail wrapped with an aluminum strip, (c) 1 iron nail wrapped with a magnesium strip, and (d) 1 iron nail wrapped with a lead strip. He used the same amount of water, equal amounts (mass) of the metals, and the same type of iron nails. At the end of 5 days, he rated the amount of rusting as small, moderate, or large. He also recorded the color of the water. What is the control in this experiment? |
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Definition
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. Which of the following is the most appropriate title for JoAnna's experiement? |
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Definition
| The Effect of Various Perfumes on the Behavior of Bees |
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. Which of the following is JoAnna's hypothesis? |
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Definition
| If the perfume contains Ester X, then bees will display agitated behavior. |
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. What is the independant variable? |
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Definition
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. What is the dependant variable? |
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Definition
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. What are the constants in this experiment? |
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Definition
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. Which of the following is a constant in this experiment? |
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Definition
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. Which of the following is not a constant in this experiment? |
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Definition
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Term
| JoAnna read that certain perfume esters would agitate bees. Because perfume formulas are secret, she decided to determine whether the unknown ester X(which was known to agitate bees) was present in four different perfumes by observing the bee's behavior. She placed a saucer containing 10 mL of the first perfume 3 m from the hive. She recorded the time required for the bees to emerge and made observations on their behavior. After a 30-minute recovery period, she tested the second, third, and forth perfumes. All experiments were conducted on the same day when the weather conditions were similar; that is air temperature and wind. Which of the following is a way to improve JoAnna's experiment? |
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Definition
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Term
| Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following would be the most appropriate title for Susan's experiment? |
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Definition
| The Effect of Bank Position on Fossils |
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Term
| Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following would not be an appropriate hypothesis for this experiment? |
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Definition
| Fossil's found in Susan's yard are from prehistoric times. |
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Term
| Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. What is the independant variable in this experiment? |
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Definition
| Depth of sample from suface |
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Term
| Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. What is the dependant variable in this experiment? |
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Definition
| Kind and number of fossils |
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Term
| Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following is a constant in this experiment? |
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Definition
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Term
| Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Which of the following is the control in this experiment? |
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Definition
| There is no control in this experiment? |
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Term
| Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads, 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. Which of the following is the most appropriate title for Jackie's experiment? |
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Definition
| The Effects of Various Concentrations of Aloe Vera on the Regeneration of Flatworms |
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Term
| Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads, 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. What is the independant variable? |
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Definition
| Concentration of Aloe vera |
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Term
| Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads, 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. What is the dependant variable? |
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Definition
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Term
| Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads, 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. Which of the following is a constant in this experiment? |
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Definition
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Term
| Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads, 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. Which was the control for this experiment? |
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Definition
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Term
| Jackie read that Aloe vera promoted healing of burned tissue. She decided to investigate the effect of varying amounts of Aloe vera on the regeneration of flatworms. She bisected the flatworms to obtain 10 parts (5 heads, 5 tails) for each experimental group. She applied concentrations of 0%, 10%, 20%, and 30% Aloe vera to the groups. Fifteen mL of Aloe vera solutions were applied. All flatworms were maintained in a growth chamber with identical food, temperature, and humidity. On day 15, Jackie observed the regeneration of the flatworm parts and categorized development as full, partial, or none. What type of data was Jackie collecting? |
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Definition
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Term
| Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10 ,15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. What type of data was Susan collecting? |
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Definition
| Qualitative and Quantitative |
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Term
| Alice needed to design a science project. She decided that she wanted to focus her project on how an earthworm’s behavior helps it survive. Before designing her experiment, Alice went to the library to learn more about earthworms. Which of the following resources would provide the best information for her to use? |
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Definition
| non-fiction books and science websites on earthworm adaptations |
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Term
| Alice needed to design a science project. She decided that she wanted to focus her project on how an earthworm’s behavior helps it survive. Alice wrote down four ideas about earthworm behavior that she wanted to test. Which idea can be tested experimentally? |
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Definition
| Earthworms will move away from direct light sources. |
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Term
| Alice needed to design a science project. She decided that she wanted to focus her project on how an earthworm’s behavior helps it survive. Alice conducted a controlled experiment and tested a single variable. She used one earthworm for her experiment and conducted the experiment once. She typed her conclusion and glued it to her science project poster. The next day, Alice was surprised to find out that she received a low grade on her conclusion. What could Alice do differently to increase her grade on her conclusion? |
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Definition
| collect more data by repeating the experiment or using more worms |
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Term
Fish hatcheries are an enclosed environment used to farm a large number of fish. A fish biologist wondered if fish raised in hatcheries would be able to survive in a wild environment. The
biologist thought that fish raised in hatcheries lost their fear of predators. To test the idea, he placed 15 young hatchery trout and 15 wild trout of the same age and species into two separate but identical tanks. He divided each tank in half by inserting a clear divider made out of plexiglass. The biologist placed the trout on one side of the plexiglass divider and a large predatory fish – the northern pike – on the other side of the plexiglass. He then recorded the amount of time it took the young trout to move to the back of the tank away from the northern pike. The biologist found that the hatchery fish moved away much slower than the wild fish. Which of the following statements is the basis for the hypothesis that was tested? |
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Definition
| “The biologist thought that fish raised in hatcheries lost their fear of predators.” |
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Term
Fish hatcheries are an enclosed environment used to farm a large number of fish. A fish biologist wondered if fish raised in hatcheries would be able to survive in a wild environment. The
biologist thought that fish raised in hatcheries lost their fear of predators. To test the idea, he placed 15 young hatchery trout and 15 wild trout of the same age and species into two separate but identical tanks. He divided each tank in half by inserting a clear divider made out of plexiglass. The biologist placed the trout on one side of the plexiglass divider and a large predatory fish – the northern pike – on the other side of the plexiglass. He then recorded the amount of time it took the young trout to move to the back of the tank away from the northern pike. The biologist found that the hatchery fish moved away much slower than the wild fish. Prior to starting the experiment, the biologist needed to fill out paperwork explaining procedures for using and caring for the fish in his experiment. What is the purpose for this paperwork? |
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Definition
| to ensure that his research animals will be treated humanely |
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Term
| A professor of molecular biology has completed an experiment on mutations. The results indicate that the current understanding of how mutations occur is incomplete. Which is the most appropriate way to share the results of this experiment? |
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Definition
| Publish the results in a scientific journal |
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Term
| A fertilizer company claims that their fertilizer causes rose bushes to produce more flowers. To support this claim, they set up an investigation. They added the recommended amount of fertilizer to 100 rose bushes in a greenhouse, and then they counted the number of flowers that developed on each plant. The number of flowers on each rose bush ranged from 28 to 36. The mean number of flowers on each plant was 33. A gardener was skeptical of the company’s claim. Which statement provides the best reason to be skeptical? |
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Definition
| The research was conducted without a control. |
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Term
| Which of the following statements about scientific theories is not correct? |
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Definition
| Theories are incomplete, temporary ideas. |
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Term
| A biologist has completed an investigation of the ecological effects of planting large areas with crops that have been genetically altered to prevent pest damage. In order for other scientists to properly evaluate this research, it is most important that the biologist publish which of the following types of information related to the study? |
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Definition
| the specific methodology used to obtain the study's results |
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Term
| In which of the following situations is researcher bias most likely to be a factor that could compromise the validity of a scientific investigation? |
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Definition
| The funds for the research come from sources that have a vested interest in the outcome of the research. |
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Term
| Which of the following activities best exemplifies the practice of science as inquiry? |
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Definition
| placing different objects in a tank of water to determine which ones float |
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Term
| In the early 1950s, a young researcher named Rosalind Franklin used X-ray diffraction imaging to produce a photograph of the DNA molecule. Two other researchers, James Watson and Francis Crick, used this information to develop a three-dimensional model of the DNA molecule. Their model of the DNA molecule was rapidly accepted by the scientific community following publication of their results. To a great extent, the acceptance of their model of the DNA molecule was based on: |
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Definition
| the use of data on the DNA molecule that was collected before their research was begun. |
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Term
| Which of the following strategies would result in a biased interpretation of the results of a scientific investigation? |
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Definition
| failing to include experimental data that would cause other scientists in the field to call into question the conclusions of the research |
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Term
| A chemist is weighing the products of a chemical reaction. The research design requires that the experimental values collected be determined to a high level of precision. Which of the following will most directly affect the precision of the data the chemist collects? |
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Definition
| the choice of equipment used for weighing the products |
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Term
| A scientist announces that she has discovered a strain of mice that does not develop cancer even after repeated injections with chemical agents known to cause cancer in normal mice. To demonstrate to the scientific community that the discovery is legitimate, it is most important that the scientist: |
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Definition
| provide verifiable evidence to support her claim. |
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Term
| Scientists conducted a study of 5000 men over the age of 50 years. The participants filled out a questionnaire about various health issues. Based on the data, the researchers found that those participants who ate a high-fiber diet reported 25% fewer incidents of heart attacks. The scientists concluded that a high-fiber diet prevents heart attacks. The validity of this conclusion is questionable primarily because: |
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Definition
| the research does not demonstrate a causal relationship between high fiber diets and a lowered incidence of heart attacks. |
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Term
| Professional scientific journals would be most likely to reject an article for publication in which of the following situations? |
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Definition
| The article lacks information about the methods used in the study. |
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Term
Twelve mice were sent through a maze, and the times (in minutes) to complete it are listed below. Find the range of these times.
10, 9, 12, 11, 8, 15, 9, 7, 8, 6, 12, 10 |
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Definition
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Term
A timed puzzle was completed by 7 participants, and their completion times are given below (in seconds). What is the range of completion times?
13.2, 14.5, 12.9, 13.9, 15.6, 14.1, 12.3 |
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Definition
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Term
Joe tested the effects of fertilizer on plant growth. What is the mean height (cm)for the 6 control plants listed below?
89, 93, 87, 86, 85, 94 |
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Definition
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Term
The average annual wind speed for the 5 windiest cities in the U.S. is given below in miles per hour. What is the mean of these annual wind speeds?
15.4, 14.0, 13.5, 13.1, 12.9 |
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Definition
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Term
What is the median age of the 7 children whose ages are listed below?
11, 10, 13, 11, 12, 16, 14 |
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Definition
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Term
The number of tornadoes that have occurred in the U.S. in the last 8 years is listed below. Find the median.
684, 764, 1133, 656, 702, 1303, 856, 1132 |
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Definition
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Term
Given below are the daily high temperatures for one winter week in Albany, New York. What is the mode of these temperatures?
39, 42, 34, 37, 39, 44, 41 |
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Definition
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Term
Find the mode of the following numbers.
18, 13, 0, 16, 3, 15, 0, 11, 14, 0, 12 |
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Definition
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Term
| The mean of a set of numbers is 108. The sum of the numbers is 2,052. How many numbers are in the set? |
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Definition
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Term
The following is the number of number of inches of rain on 10 different days. What is the mode?
8, 11, 9, 14, 9, 15, 18, 6, 9, 10 |
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Definition
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Term
In a crash test, 11 cars were tested to determine what impact speed was required to obtain minimal bumper damage. Find the mode of the speeds given in miles per hour below.
24, 15, 18, 20, 18, 22, 24, 26, 18, 26, 24 |
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Definition
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Term
The test scores of 9 study participants are listed below. Find the mode.
82, 92, 75 , 91, 92, 89, 95, 100, 86 |
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Definition
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Term
The speeds of 12 turtles are recorded below (in cm per minute). Find the mode.
35, 43, 39, 46, 43, 47, 38, 51, 43, 38, 40, 45 |
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Definition
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Term
The manager of a nursery recorded the number of orange trees sold per day in 2 weeks (below). Which of the following statements is true?
132, 121, 119, 116, 130, 121, 131, 117, 119, 135, 121, 129, 119, 134 |
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Definition
| The modes are 119 and 121. |
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Term
Ten earthquakes were measured using the Richter scale and their magnitudes are listed below. Which of the following statements is true?
7.0, 6.2, 7.7, 8.0, 6.4, 7.2, 5.4, 6.6, 7.5, 5.9 |
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Definition
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Term
Eleven daily temperatures for Juneau, Alaska are listed below, in degrees Fahrenheit. Which of the following statements is true?
-21, 0, +2, -15, 0, +5, -18, +7, 0, -32, +21 |
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Definition
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Term
Find the range of these distances of tagged bears from the site of their original capture:
10 km, 15 km, 12 km, 14 km, 8 km, 16 km |
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Definition
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Term
Find the range of these trial scores:
93, 79, 83, 89, 90, 71, 85 |
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Definition
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Term
Find the range of these maze times given in seconds:
7.3 s, 8.4 s, 8.0 s, 7.5 s, 9.4 s, 8.7 s, 9.1 s |
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Definition
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Term
Customers are a nursery are willing to pay the following prices listed below for a 5 gallon shrub. What is the range of these prices?
$7.50, $9.25, $8.75, $9.50, $7.25, $8.50 |
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Definition
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| José traveled for 2 hours at a rate of 70 kilometers per hour and for 5 hours at a rate of 60 kilometers per hour. What was his average speed for the 7-hour period? |
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Definition
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Term
| Find the median of the following amounts: $4.10, $4.32, $5.52, $7.18, $7.92 and $9.58. |
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Definition
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Term
| Find the average of the following amounts: $4.10, $4.32, $5.52, $7.18, $7.92 and $9.58. |
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Definition
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Term
| Find the mode for the values: 68, 77, 79, 84, 85, 84, 90, 91, 93, 100 |
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Definition
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Term
| Find the mode for the values: 15, 18, 18, 23, 37, 29, 32, 32, 33, 37, 37, 54 |
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Definition
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Term
| Calculate the mean for the values: 2, 5, 6, 6, 8, 10, 12, 17 |
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Definition
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Term
| Find the range of the values: 2, 5, 6, 6, 8, 10, 12, 17 |
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Definition
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Term
| What is the range of this set? 10, 12, 14, 16 |
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Definition
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Term
| What is the mode of this set? 6, 2, 4, 5, 7, 3, 8, 2, 9 |
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Definition
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Term
| What is the median of this set? 2,4,6 |
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Definition
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Term
| This is the middle point of a set of numbers going from the least to the greatest. |
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Definition
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Term
| The number that occurs the most in a set of numbers is called ___. |
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Definition
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Term
| What is the mode in this set? 3, 5, 4, 2, 5, 3, 5, 2, 5 |
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Definition
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Term
| What is the range of this set? 2, 4, 6 |
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Definition
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Term
| What is the scientific notation for the following number: 1,000,000,000 |
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Definition
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Term
| The difference between the minimum and the maximum observation in the data is called the.... |
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Definition
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Term
| Roads are slippery when there is snow on the roads. This is an example of |
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Definition
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Term
| ____________ is any one of several procedures for transmitting information from one person to another. Writing reports, or participating in discussions in class are examples of this. |
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Definition
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Term
| Observations that describe something using words is called ____________ observations. |
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Definition
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Term
| Which of the following precautions should be taken when working with chemicals? |
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Definition
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Term
| Which of the following should be worn when working with chemicals? |
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Definition
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Term
| Which of the following should be worn when working with chemicals? |
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Definition
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Term
| Which of the following precautions should be taken when working with chemicals? |
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Definition
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Term
| Which of the following precautions should be taken when working with mold and microorganisms? |
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Definition
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Term
| Which of the following is a safe practice when working with molds or microorganisms? |
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Definition
| None of the answers are correct |
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Term
| Which of the following precautions should be taken when working with mold and microorganisms? |
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Definition
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Term
| Which of the following precautions should be taken when working with electricity? |
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Definition
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Term
| Which of the following is a safe practice when working with electricity? |
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Definition
| None of the answers are correct |
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Term
| Which of the following precautions should be taken when working with animals and humans? |
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Definition
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Term
| Which of the following is an ethical practice when working with animal subjects? |
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Definition
| None of the answers are correct |
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Term
| Which of the following should be included in the introduction of a scientific paper? |
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Definition
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Term
| Which of the following should be included in the conclusion of a scientific paper? |
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Definition
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Term
| Which of the following should not be included in the conclusion of a scientific paper? |
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Definition
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Term
| Used to reduce the possibility of chance errors. |
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Definition
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Term
| A statement of possible relationship between the independent and dependent variables. |
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Definition
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Term
| The factor in an experiment that responds to the purposefully changed factor. |
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Definition
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Term
| A group or sample that is used as a standard for comparison. |
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Definition
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Term
| The factor in an experiment that is changed on purpose. |
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Definition
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Term
| Any factor that is not allowed to change. |
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Definition
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Term
| Raheem wanted ti determine if ice made soda-pop lose its fizz. He put 100 mL of Molly's Root Beer into each of 15 identical water glasses. To three of the glasses he added 1 ice cube each, to the next three he added 2 ice cubes each, to the next three he added 3 ice cubes each, and to the fourth set of three he added 4 ice cubes each. He used identical ice cubes. To a fifth set of 3 glasses he added no ice cubes. Raheem then measured the time it took for the root beer to go flat or stop releasing bubbles. What is the independent variable? |
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Definition
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Term
| Raheem wanted ti determine if ice made soda-pop lose its fizz. He put 100 mL of Molly's Root Beer into each of 15 identical water glasses. To three of the glasses he added 1 ice cube each, to the next three he added 2 ice cubes each, to the next three he added 3 ice cubes each, and to the fourth set of three he added 4 ice cubes each. He used identical ice cubes. To a fifth set of 3 glasses he added no ice cubes. Raheem then measured the time it took for the root beer to go flat or stop releasing bubbles. What is the dependent variable? |
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Definition
| Time it took for the soda to go flat |
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Term
| Raheem wanted ti determine if ice made soda-pop lose its fizz. He put 100 mL of Molly's Root Beer into each of 15 identical water glasses. To three of the glasses he added 1 ice cube each, to the next three he added 2 ice cubes each, to the next three he added 3 ice cubes each, and to the fourth set of three he added 4 ice cubes each. He used identical ice cubes. To a fifth set of 3 glasses he added no ice cubes. Raheem then measured the time it took for the root beer to go flat or stop releasing bubbles. What are the constants? |
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Definition
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Term
| Raheem wanted ti determine if ice made soda-pop lose its fizz. He put 100 mL of Molly's Root Beer into each of 15 identical water glasses. To three of the glasses he added 1 ice cube each, to the next three he added 2 ice cubes each, to the next three he added 3 ice cubes each, and to the fourth set of three he added 4 ice cubes each. He used identical ice cubes. To a fifth set of 3 glasses he added no ice cubes. Raheem then measured the time it took for the root beer to go flat or stop releasing bubbles. How many repeated trials were conducted? |
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Definition
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Term
| Raheem wanted ti determine if ice made soda-pop lose its fizz. He put 100 mL of Molly's Root Beer into each of 15 identical water glasses. To three of the glasses he added 1 ice cube each, to the next three he added 2 ice cubes each, to the next three he added 3 ice cubes each, and to the fourth set of three he added 4 ice cubes each. He used identical ice cubes. To a fifth set of 3 glasses he added no ice cubes. Raheem then measured the time it took for the root beer to go flat or stop releasing bubbles. What was the control? |
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Definition
| The glass with no ice cubes |
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Term
| Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda, 15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is the dependent variable? |
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Definition
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Term
| Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda, 15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is the independent variable? |
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Definition
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Term
| Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda, 15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is the control? |
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Definition
| The glass with pure vinegar |
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Term
| Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda, 15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. What is a constant in this experiment? |
|
Definition
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Term
| Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda, 15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. How could this experiment be improved? |
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Definition
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Term
| Bobbie wanted to find out if diluting vinegar would change the speed at which it would react with Grey's Baking Soda. She used identical glasses. Into each of 3 glasses she put 2 g of baking soda and 25 mL pure vinegar; in each of 3 more glasses she put 2 g of baking soda, 15 mL vinegar and 10 mL water; into each of 3 more glasses she put 2 g of baking soda, 10 mL vinegar, and 15 mL water. In each case she measured the time it took the vinegar and the baking soda to finish reacting or to stop producing carbon dioxide gas bubbles. Which of the following could be a hypothesis for this experiment? |
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Definition
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Term
| A brief summary of the research paper or report. It includes a brief description of the problem, hypothesis, procedures, results, and conclusions. |
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Definition
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Term
| The horizontal or vertical line found at the bottom and a left side of a graph. |
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Definition
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Term
| The horizontal line found at the bottom on a graph. |
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Definition
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Term
| The vertical line found at the left side of a graph. |
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Definition
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Term
| A pictorial display of a set of data using bars to indicate the value. |
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Definition
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Term
| A statistical error that occurs when samples are drawn so that all members of the population do not have an equal chance of being included |
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Definition
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Term
| A list of all books, papers, journal articles, and communications cited or used in the preparation of a report or scientific research paper. |
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Definition
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Term
| The part of an experiment that serves as a standard of comparison. |
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Definition
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Term
| The bits of information gathered in an experiment. |
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Definition
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Term
| A pictorial display of a set of data . |
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Definition
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Term
| A paragraph at the beginning of a report that states the reason why the experiment was done. |
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Definition
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Term
| Data collected using a measurement instrument and a standard scale. |
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Definition
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Term
| Data that are descriptions of qualities such as shape, color, and gender. |
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Definition
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Term
| A sequence of precisley stated steps that describe how an experiment was done, including the materials and equipment used. |
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Definition
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Term
| The number of times that a level of the independent variable is tested in an experiment. |
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Definition
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Term
| A section of the report of an experiment that includes data tables, graphs, and sentences that summarize any trends found in the data. |
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Definition
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Term
| Which of the following should be included in the results section of a scientific report? |
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Definition
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Term
| Which of the following should not be included in the results section of a scientific paper. |
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Definition
| Reason for conducting the experiment |
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Term
| The specific set of individuals, selected from a population, to be subjects in an experiment. |
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Definition
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Term
| A series of equal intervals and values placed on each axis of a graph. |
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Definition
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Term
| A number used to describe or analyze a set of data. |
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Definition
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Term
| Things or factors that can be assigned to take on different values in an experiment. |
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Definition
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Term
| Lisa planted some tomatoes on the north side of her house and on the south side of her house. After three weeks, she noticed that the tomato plants on the south side of the house were much taller and stronger. She wants to know why this happened. What is a question Lisa couls ask herself to help solve the problem? |
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Definition
| What is different about the growing conditions between the two sides of the house. |
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Term
| A toy manufacturer is investigationg why its new toy trucks are breaking down much more quickly than its older toy trucks. What would be the most useful information for the toy company to aquire? |
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Definition
| The strength of the materials used in the new toy trucks |
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Term
| Which of the following is a testable hypothesis? |
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Definition
| every member of the track team who uses the new athletic shoes will be able to beat his or her own best record. |
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Term
| Cuthbert is experimenting with breeding a species of flower. He thinks that the alleles that control bloom color in this species are in a cominant-recessive relationship to each other. His hypothesis: if a plant has both the red allele and the white allele, then the flower will only make red blooms. Which of the following experimental results would lead to Cuthbert rejecting his hypothesis. |
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Definition
| He crosses a red-blooming plant with a white blooming plant and gets 25% red-blooming plants, 50% pink blooming plants, and 25% white blooming plants. |
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Term
| For many year, the medical community said the ulcers in the human stomach were caused by increased stress levels. Increased stress caused the ctomach to produce more acid; this, in turn ate through the mucus lining the stomach and damaged its tissue. In 1979, an Australian scientist named Robin Warren found some strange bacteria when he examined stomach tissue removed from an ulcer patient. Warren wondered whether there might be a relationship between the patient's ulcers and the bacteria. What question could Warren have asked to start an investigation into a possible relationship between the bacteria and ulcers? |
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Definition
| Do the bacteria in the stomach have anything to do with the patient's ulcer? |
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Term
| For many year, the medical community said the ulcers in the human stomach were caused by increased stress levels. Increased stress caused the ctomach to produce more acid; this, in turn ate through the mucus lining the stomach and damaged its tissue. In 1979, an Australian scientist named Robin Warren found some strange bacteria when he examined stomach tissue removed from an ulcer patient. Warren wondered whether there might be a relationship between the patient's ulcers and the bacteria. What would be the best type of information for Warren to gather for an investigation of a relationship between the bacteria and ulcers? |
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Definition
| Whether the bacteria exist in other ulcer patients. |
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Term
| For many year, the medical community said the ulcers in the human stomach were caused by increased stress levels. Increased stress caused the ctomach to produce more acid; this, in turn ate through the mucus lining the stomach and damaged its tissue. In 1979, an Australian scientist named Robin Warren found some strange bacteria when he examined stomach tissue removed from an ulcer patient. Warren wondered whether there might be a relationship between the patient's ulcers and the bacteria. Warren found the same type of bacteria in the stomachs of other ulcer patients. Based on this finding, which hypothesis would best test a possible relationship between the bacteria and the ulcers? |
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Definition
| If the bacteria are a cause of ulcers, then killing the bacteria in the stomach may decrease the number of ulcers. |
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Term
| Which of the following is most useful for protecting a student's skin from harm during an experiment? |
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Definition
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Term
| The ecologist used a laser rangefinder and a piece of equipment called a clinometer to find the heights of the trees. Later, she found that her equipment was calibrated incorrectly and indicated that all trees were .5 m taller than they really were. What typre of error occured? |
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Definition
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Term
| Why is it important to report an experiment's procedures and results accurately? |
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Definition
| So others can repeat the experiment to reduce the chance of bias |
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Term
For an experiment, students collect a bucket of water from a local marsh. The students fill five flasks with 500 mL of water from the bucket. One flask is sealed and set aside. Each of the other flasks is rapidly heated to 60ºC using a Bunsen burner. Each flask is kept at this temperature for 1, 2, 5, or 10 minutes and then sealed and quickly cooled to 30ºC using a tub filled with ice. The five flasks are allowed to stand at room temperature for five days. Students then examine a sample from each flask under a microscope and record the number of living organisms that are
present. Using this information, the students calculate the total number of organisms in each flask. It would be most important for students to follow which of the following safety practices during this experiment? |
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Definition
| Wear safety glasses when heating and cooling the flasks. |
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Term
For an experiment, students collect a bucket of water from a local marsh. The students fill five flasks with 500 mL of water from the bucket. One flask is sealed and set aside. Each of the other flasks is rapidly heated to 60ºC using a Bunsen burner. Each flask is kept at this temperature for 1, 2, 5, or 10 minutes and then sealed and quickly cooled to 30ºC using a tub filled with ice. The five flasks are allowed to stand at room temperature for five days. Students then examine a sample from each flask under a microscope and record the number of living organisms that are
present. Using this information, the students calculate the total number of organisms in each flask. The dependent variable in this experiment is: |
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Definition
| the number of living organisms present in each flask. |
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Term
| In an experiment designed to test the effects of solutes on temperature, students label four beakers A, B, C, and D and add 50 mL of distilled water at room temperature to each. They then add 5 g of table sugar to beaker B, 10 g to beaker C, and 15 g to beaker D. No sugar is added to beaker A. The students measure the temperature of the contents of each beaker. After heating each beaker for the same amount of time on a hot plate at the same setting, the students measure the temperature again. The change in temperature is recorded. Beaker A is included in this investigation for which of the following reasons? |
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Definition
| as a control to establish the standard against which temperature changes in the other beakers may be compared |
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Term
| When preparing to heat a liquid in a beaker or flask on a hot plate, the first safety precaution that should be taken is to: |
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Definition
| check the glassware for cracks or chips. |
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Term
| Which of the following should be considered when designing an experiment? |
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Definition
| All of the answers are correct |
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Term
| What is a statement that proposes a cause-and-effect relationship between two variables? |
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Definition
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Term
| Which of the following is most important when judging the quality of a scientific theory? |
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Definition
| The quality and reliability of data that supports the theory |
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Term
| The best term to describe the application of scientific principles and new technologies to agriculture is ________. |
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Definition
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Term
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Definition
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Term
| The person providing the foundation for scientific study of heredity was _________. |
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Definition
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Term
| A colorless, odorless liquid essential for all forms of life |
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Definition
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Term
| A resource provided by nature that cannot replace itself |
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Definition
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Term
| Nondomesticated animals that thrive in natural environments |
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Definition
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Term
| The control and preservation of natural resources for present and future use |
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Definition
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Term
| The production and management of trees for lumber and other related commodities |
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Definition
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Term
| Resources found in nature that support life and produce fuel |
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Definition
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Term
| A resource provided by nature that can replace itself |
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Definition
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Term
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Definition
| a rough drawing of an idea, object or procedure |
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Term
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Definition
| the proper place to record all SAE inventory, deposits and expenditures |
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Term
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Definition
| removing the burns from the inside edge of cut pipe |
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Term
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Definition
| using new technologies in the production of food, fiber and shelter |
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Term
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Definition
| the management of biological systems for the benefit of humans, including cloning, gene transfer and other technologies |
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Term
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Definition
| the main agency of the Federal government that oversees agriculture |
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Term
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Definition
| a basic proposal that brings business before the assembly |
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Term
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Definition
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Term
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Definition
| a hands-on team competition designed for FFA members to develop career-related skills |
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Term
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Definition
| mixture of portland cement, finishing lime and sand |
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Term
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Definition
| a machine, often large that is comprised of many simple machines |
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Term
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Definition
| a moving vehicle, usually with wheels or tacks with an engine that provides power to other equipment |
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Term
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Definition
| the measurement of electrical power voltage X amps |
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Term
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Definition
| a national organization for students enrolled in agriculture education that promotes leadership, growth and career success |
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Term
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Definition
| solid lines showing the exact area specified by the dimensions |
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Term
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Definition
| continuous and uniform line of filler metal |
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Term
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Definition
| the measurement of electrical pressure |
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Term
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Definition
| engine process of taking fuel and air into the combustion chamber |
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Term
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Definition
| non farm work or processes in the agricultural industry |
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Term
| Supervised Agriculture Experience |
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Definition
| an opportunity for students to develop knowledge and skills in agriculture-related fields while in supervised settings |
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Term
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Definition
| the science of producing aquatic plants and animals |
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Term
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Definition
| the engine process in which burning fuel expands rapidly but evenly to drive the piston downward |
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Term
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Definition
| a resource provided by nature that cannot replace itself |
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Term
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Definition
| proportion of one component to another by weight or volume |
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Term
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Definition
| a saw with lager teeth for cutting with the grain of wood |
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Term
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Definition
| a traditional contest designed to emphasize the purpose of meetings and duties of officers |
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Term
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Definition
| planning, installing and maintaining systems of pipes and fixtures |
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Term
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Definition
| a metal or wooden structure that contains concrete until it happens |
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Term
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Definition
| to cool steel slowly so as to make it soft and malleable |
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Term
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Definition
| the science of producing crops and raising livestock |
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Term
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Definition
| the outer layer of the earth's crust that supports plant growth |
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Term
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Definition
| a mixture of stone aggregates, sand and portland cement and water that hardens as it dries |
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Term
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Definition
| opening in board made by the cutting of a saw blade |
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Term
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Definition
| a plant that completes its life cycle in one year or less |
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Term
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Definition
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Term
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Definition
| the direction of electrical flow in the ac welding circuit |
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Term
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Definition
| a kind of nail with a flat head that is used in general construction |
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Term
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Definition
| a reading taken on a point of known elevation |
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Term
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Definition
| an SAE in which students are employed in an agriculture related field |
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Term
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Definition
| a student owned business that serves as an SAE |
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Term
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Definition
| an SAE in which students learn to raise and manage crops and livestock |
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Term
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Definition
| to cut along the grain of wood |
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Term
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Definition
| a picture or likeness made with pencil, pen, chalk, crayon or other instruments |
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Term
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Definition
| heavy solid black line drawn close to the outer edge of paper used to draw plans |
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Term
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Definition
| the process of finely sharpening a cutting edge with a bench stone or hand stone |
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Term
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Definition
| an agency of the Federal government focused on environmental quality |
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Term
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Definition
| an agency focused on responding to natural and other disasters |
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Term
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Definition
| measurement used to size pipe based on a measurement taken from the exterior walls of the pipe |
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Term
| Shielded metal arc welding |
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Definition
| welding with electrical power as a source of heat using rods and flux that forms a gaseous shield around the molten metal until it solidifies |
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Term
| Agricultural mechanization |
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Definition
| the use of complex machines, often powered to do work in the agricultural industry |
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Term
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Definition
| the process of heating tool-grade steel followed by carefully controlled cooling to gain the desired degree of hardness |
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Term
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Definition
| a continuous regulated pressure supplied to the oxyacetylene torch assembly |
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Term
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Definition
| a plane made by two bevels creating a point similar to that of an axe |
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Term
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Definition
| material on an arc welding rod that cleans the metal aids in proper cooling and produces a gas shield for the weld |
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Term
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Definition
| implements used in the agricultural industry to produce plants, animals and other products |
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Term
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Definition
| force needed to lift 550 pounds one foot in one second rating system of engine power displacement |
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Term
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Definition
| a plant that needs two years to complete its life cycle |
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Term
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Definition
| all of the activities in producing and marketing food, fiber and forestry products to consumers |
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Term
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Definition
| a type of speech in which the speaker prepares ideas but does not memorize exact words |
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Term
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Definition
| a device used to stop the flow of electrical current; used in controlling devices |
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Term
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Definition
| an instrument with all the increments shortened according to proportion |
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Term
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Definition
| movement of an engine's piston to squeeze or compress the fuel air mixture |
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Term
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Definition
| current that reverses itself sixty time per second |
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Term
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Definition
| a material that supplies nutrients to plants |
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Term
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Definition
| the science of producing fruits, vegetables and ornamental plants |
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Term
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Definition
| a wood measurement of 144 cubic inches |
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Term
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Definition
| a reading taken on a point of unknown elevation |
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Term
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Definition
| the number of times a rotating shaft or blade turns or rotates in sixty seconds |
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Term
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Definition
| ratio of materials in concrete or mortar |
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Term
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Definition
| a building in which mechanical work is performed |
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Term
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Definition
| a saw with small teeth for cutting across the grain of wood |
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Term
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Definition
| a dry powder made by burning limestone and clay followed by grinding and mixing |
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Term
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Definition
| making an electrical connection between a piece of electrical equipment and the earth |
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Term
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Definition
| a plant with two seed leaves |
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Term
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Definition
| a device used to balance a lawn mower blade to prevent excess vibration during operation |
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Term
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Definition
| a safety hazard that results when a saw blade binds in the material being cut resulting in uncontrollable throwing of the material or saw |
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Term
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Definition
| the food-making process of plants |
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Term
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Definition
| with sheet metal a thickness scale used to identify the thickness of metal under one fourth inch |
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Term
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Definition
| the amount that a machine increases force |
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Term
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Definition
| to join paths by melting them together |
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Term
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Definition
| a cut or groove at the end of a board made to receive another board and form a joint |
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Term
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Definition
| design, construction, repair and maintenance of tractors, machinery and other structures used in the agricultural industry |
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Term
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Definition
| gas fuel used in acetylene welding |
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Term
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Definition
| current that flows in one direction continuously |
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Term
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Definition
| a matter on which differences of opinion exist |
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Term
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Definition
| a single inclined plane which is concave ground |
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Term
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Definition
| to give members the right to express approval of or opposition to a particular action |
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Term
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Definition
| a flame with a balance of oxygen and acetylene |
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Term
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Definition
| facilities used in the agricultural industry |
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Term
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Definition
| nondomesticated animals that thrive in natural environments |
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Term
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Definition
| a motor driven power hand saw with a round blade |
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Term
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Definition
| flow of electrons in a conductor |
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Term
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Definition
| a part used to connect pieces of pipe to other pieces of pipe |
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Term
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Definition
| a bevel which is raised or curved outward |
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Term
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Definition
| the official written record of a business meeting |
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Term
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Definition
| the process by which a plant loses water vapor |
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Term
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Definition
| the process of cutting threads on pipe |
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Term
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Definition
| twist drill made tempered especially to drill holes in steel |
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Term
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Definition
| metal tube with individually insulated wires |
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Term
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Definition
| the control and preservation of natural resources for present and future use |
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Term
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Definition
| a mixture of tin and lead used to faster together sheet metal and electrical connections |
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Term
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Definition
| a plants that needs more than two years to complete its life cycle |
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Term
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Definition
| bonding with metals and alloys that melt above 840 degrees F when capillary action occurs |
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Term
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Definition
| to cut across the grain of wood |
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Term
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Definition
| metals that do not contain iron |
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Term
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Definition
| a device or machine that has only one or two parts such as a wheel or axle |
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Term
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Definition
| a series of dashes that indicate unseen edges |
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Term
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Definition
| a method of conducting meetings in an orderly manner |
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Term
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Definition
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Term
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Definition
| a slender nail with a small head used for interior trim work |
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Term
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Definition
| a point of predetermined elevation |
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Term
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Definition
| movement of the piston when expels burned gases from the cylinder |
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Term
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Definition
| gas in the atmosphere that supports combustion used in some kinds of welding to promote burning of a hot flame |
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Term
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Definition
| solid line in a drawing that shows the visible edge of an object |
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Term
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Definition
| a resource provided by nature that can replace itself |
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Term
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Definition
| a type of bevel with one edge used on wood chisels and plane ions |
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Term
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Definition
| resources found in nature that support life and produce fuel |
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Term
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Definition
| a flame with a balance of oxygen and acetylene |
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Term
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Definition
| metal that is made with iron ore |
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Term
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Definition
| an electrical source and wires connected to a light, heater or motor |
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Term
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Definition
| common drill bit used for making round holes in wood and metal |
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Term
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Definition
| measurement used to size a pipe based on a measurement taken from the interior walls of the pipe |
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Term
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Definition
| a mixture or two or more materials |
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Term
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Definition
| a colorless, odorless liquid essential for all forms of life |
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Term
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Definition
| the measurement of electrical flow in a conductor |
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Term
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Definition
| a measuring device to determine vertical distances in making a land survey or contour map |
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Term
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Definition
| anything made of brick, stone, tile or concrete units held in place by masonry cement |
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Term
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Definition
| sheath cable containing individually insulted electrical wires |
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Term
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Definition
| a square or rectangular groove in the face of a board |
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Term
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Definition
| provides fuel and air to the engine in appropriate proportions and volume |
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Term
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Definition
| the use of engines, motors and other sources of power to do work in the agricultural industry |
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Term
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Definition
| the measurement of electrical flow in a conductor |
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Term
| Ground fault circuit interrupter |
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Definition
| safety device that prevents ground faults when operating power tools and using electricity |
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Term
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Definition
| a written description of how to safely use and maintain equipment provided by the manufacturer |
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Term
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Definition
| the science of plant growth, care and management |
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Term
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Definition
| fusing two pieces of material using a heat process most commonly used with metal and plastics |
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Term
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Definition
| a type of speech in which the speaker prepares the speech completely beforehand |
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Term
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Definition
| a flame with an excess of acetylene in the mixture |
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Term
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Definition
| the process by which plants convert food to energy |
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Term
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Definition
| a spark that ignites the fuel and air mixture |
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Term
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Definition
| a metal welding rod coated with flux used in electric arc welding |
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Term
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Definition
| the production and management of trees for lumber and other related commodities |
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Term
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Definition
| the ability to direct and guide others to accomplish a goal |
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Term
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Definition
| a plant with one seed leaf |
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Term
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Definition
| a bevel which is hollowed or curved inward |
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