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| the study of the composition of matter and the changes that matter undergoes. |
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| a proposed explanation or statement that is capable of being supported or not supported by observational evidence |
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| a repeatable procedure that is used to test a hypothesis |
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| the variable that is changed during an experiment;also called a manipulated variable |
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| the variable that is observed during an experiment;also called a reasonable variable |
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| a well-established and highly reliable explanation based on natural and physical phenomena |
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| a concise statement that summarizes the results of many observations and experiments |
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| a quantitative description that includes both a number and a unit |
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| an expression of numbers in the form m x 10n ,where m is equal to or greater than 1 and less than 10 and n is an integer |
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| the closeness of a measurement to the true value of what is being measured |
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| describes the closeness, or reproducibility ,of a set of measurements taken under the same conditions |
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| a quantity used by general agreement of the scientific community |
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| a quantitative value measured during an experiment |
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| the value that a measured value differs from the accepted value |
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| all the digits that can be known precisely in a measurement, plus a last estimated digit |
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| International System of Units (SI) |
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| the revised version of the metric system |
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| meter (m) - the base unit of length; liter (L) - the base unit of volume; gram (g) - the base unit of mass |
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| a technique of problem-solving that uses the units that are part of a measurement to help solve the problem |
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| Logical, systematic approach to the solution of a scientific problem |
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| Scientific Method Scenario |
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Definition
Ask a question
Form a hypothesis
Test the hypothesis (create a method to test)
Collect data
Analyze data
Draw conclusion
If hypothesis is NOT supported, then re-evaluate and retest |
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One type of data; descriptive an NON-NUMERIC results (observations with the 5 senses)
EX: texture, smell, test |
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One of two types of data; gives DEFINITE, NUMERIC, results. (Can be measured-Number&Unit)
EX: mass, numbers, height, circumference |
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| Generalize observations to explain natural phenomena can be used to predict but DON'T necessarily explain why |
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| Summarize hypothesis that HAVE BEEN SUPPORTED by REPEATED TESTING. They EXPLAIN WHY. |
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Definition
Responds to change
Found on the Y-Axis when graphing |
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Independent variable
One you change
Found on the X-Axis when graphing |
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| Means for Determining Whether it's an Independent or Dependent Variable |
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Definition
Can you identify the variables?
What are you controlling?
What will you be measuring?
What is your goal? |
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Causes a change in the dependent variable
EX: Taking vitamins (...variable) affects the number of birth defects (dependent variable) |
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Is best for displaying data that changes.
EX: How the volume of a gas changes with time |
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What you change
EX: In how the volume of gas changes with time, the >>>>>variable is time because you chose the time intervals to take measurements. |
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Its value depends on what happens in the experiment
EX: How the volume of a gas changes with time. In this example, the volume of gas is the >>>> variable because its value depends on what happens in the experiment (what you measure) |
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| Abbreviation for Kilogram |
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| with the degree mark in front of it, it's the abbreviation for Farhrenheit |
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| Abbreviation for Millimeter |
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| Abbreviation for Milliliter |
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| with the degree mark in front of it, it's the abbreviation for Celsius |
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| Abbreviation for Centimeter |
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| These represent quantities |
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| Is something that has size, a number, and a unit |
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| The abbreviation for Systeme Internationale |
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| A way of standardizing measurements and is also called, "the metric system." |
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Definition
This type of graph is ideal for displaying data that are parts of a whole, which should add up to 100%
It's useful when you want to compare data for several individual items or events |
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| Celsius, Fahrenheit, and Kelvin |
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Definition
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Definition
| Formula for Fahrenheit to Celsius |
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| Formula for Celsius to Fahrenheit |
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Definition
Formula for converting Kelvin to Celsius
EX: Kelvin= 0 to Celsius= |
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Definition
Formula for converting Celsius to Kelvin
EX: The temperature T in Kelvin (K) is equal to the temperature T in degrees Celsius (°C) plus 273.15:
T(K) = T(°C) + 273.15 |
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Definition
| Instrument for measuring Length (quantity) and Meter (unit name) |
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| Kilogram (kg) or Gram (g) |
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Definition
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Definition
| Instrument for measuring Mass (quantity) and Kilogram or Gram (Unit Name) |
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| Solid (cm3), Liquid-Liter (L) |
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Definition
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| Instrument for measuring Volume (quantity) and Solid(cm3)/Liquid-Liter(L) (unit name) |
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| Instrument for measuring time (quantity) and second (s)-(Unit name) |
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| Kelvin (K) or Celsius (C) |
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Definition
| Unit name for temperature |
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| Instrument used for measuring Temperature (quantity) and Kelvin-K or Celsius-C |
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Definition
King (Kilo=1000)
Henry (Hecto=100)
Died
By
Drinking
Chocolate milk |
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Definition
| In KHDbdcm, the K stands for |
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| In KHDbdcm, the H stands for |
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Definition
| In KHDbdcm, the D stands for |
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| Basic Unit=grams, meters, liters, etc |
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Definition
| In KHDbdcm, the b stands for |
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Definition
| In KHDbdcm, the d stands for |
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| In KHDbdcm, the c stands for |
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Definition
| In KHDbdcm, the m stands for |
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Move decimal point to the left
or
Divide |
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Definition
| To convert to a LARGER UNIT, you must: |
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Move decimal point to the RIGHT
or
Multiply |
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Definition
| To convert to a SMALLER UNIT, you must: |
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Term
| Significant Figures (sig figs) |
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Definition
| Help reflect a measurement's precision |
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Definition
| What is the last digit on a measurement that uses sig figs? |
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| Based on the least # of sig figs from the problem |
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Definition
| When MULTIPLYING and DIVIDING sig figs, the answer is: |
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| the LEAST # of decimal places from the problem |
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Definition
| When ADDING and SUBTRACTING sig figs, limit and round your answer to: |
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