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MAY101A
Scientific Method
27
Science
8th Grade
03/04/2011

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Term
Steps of the scientific method in order
Definition
1. Identify a problem or question
2. Make a hypothesis
3. Design an experiment/Test your hypothesis
4. Analyze your test results to see if your hypothesis was correct
5. Communicate your results (journal or lab report)
Term
How can you determine which variable is the independent variable?
Definition
See what part of the experiment that is controlled by YOU or the researcher. For example, amount of fertilizer or even brand of fertilizer could be independent variable.
Term
How can you figure out which variable is the dependent variable?
Definition
See which part of the experiment RESPONDS to changes that you have made. (for example, how much the plant grew)
Term
How many independent variables can one experiment have?
Definition
ONLY ONE... You can never have more than one if you have a good experiment
Term
Which variable can be controlled by the researcher?
Definition
the independent variable
Term
What is a misconception?
Definition
A misconception is when a person thinks their idea is correct, but it is not correct (Mud turns to frogs, which is an example of spontaneous generation )
Term
What is spontaneous generation?
Definition
The idea that nonliving things (such as trash) could produce living things (such as rats)
Term
What are some examples of spontaneous generation?
Definition
trash to rats
mud to frogs
meat to maggots
Term
What is a hypothesis?
Definition
It is what you think will happen, or did happen based on the evidence (an educated guess)
Term
What does it mean to analyze?
Definition
It means to look at information and think more deeply about it. (asking yourself why or how something happened. You are explaining or looking for errors)
Term
Why do scientists use error analysis?
Definition
To determine what mistakes were made or how their experiments could be improved
Term
What is an inference?
Definition
An inference is when you look at the facts AND make a conclusion based on those facts
Term
what is an observation?
Definition
when you look at the facts. (things you can see, taste, touch, etc...
YOU DO NOT GUESS OR INTERPRET THE DATA
Term
Which variable is the "result" of the experiment? (the researcher cannot control it)
Definition
The dependent variable (the responding variable)
Term
Another name for the manipulated variable is
Definition
the independent variable
Term
How do we calculate the volume of a regular (cube like) object?
Definition
LxWxH
Term
How do we calculate the volume of an IRREGULARLY shaped object?
Definition
Drop it in a graduated cylinder of water. Determine how much the water "went up"
Term
Why do we have a different way to measure volume when an object is irregular?
Definition
The L, W, and H of a rock cannot be determine because its not a cube like object
Term
What is mass? Does it change on other planets?
Definition
Mass is the amount of matter in an object
It WILL NOT change due to gravity
Term
What is weight? Will it change on other planets?
Definition
Weight is a measure of the pull of gravity on an object. It will change based on gravity.
Term
What is the meniscus
Definition
The curve of liquid in a graduated cylinder
Term
The two instruments we use to measure mass
Definition
triple beam balance
scale
Term
ounces or pounds measure
Definition
weight
Term
grams measure
Definition
mass
Term
How can we be safe in the lab
Definition
fire gloves and tongs
wear goggles
waft odors rather than smelling
wash hands
no horseplay
follow directions
Term
what is volume?
Definition
the amount of space an object takes up
Term
What is the difference in volume, mass and weight?
Definition
volume is the amount of space an object takes up

mass is the amount of matter in an object

weight is a measure of the pull of gravity on an object
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