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Experimental Procedure
Test Description: Variables, protocols
Instructions: Answer all questions to get your test result.
1) What is the experimental factor in an experiment called? it is the one you test.
A
constant
B
independent variable
C
control
D
dependent variable
2) What do we call all the factors that remain the same for all experimental groups in an experiment?
A
constants
B
independent variables
C
controls
D
biases
3) Timmy tested the effects of water temperature on the amount of oxygen that can be dissolved in the water. What is the dependent variable?
A
There is no dependent variable shown in the example.
B
the water temperature
C
the amount of oxygen dissolved
D
the amount of water
4) Experiments to find the best weed killer were run simultaneously. Experiment A used 1000 acres of fields. Experiment B used 200 acres of field. Which results will more reliable?
A
The will both be reliable.
B
Neither will be reliable.
C
B
D
A
5) Which of the following are important for gathering good data?
A
The data should be specific.
B
The data is detailed.
C
The data is repeatable.
D
All of the above.
6) Research was done to determine the effect of fertilizer on surface water such as ponds. Which of the following would most likely show bias?
A
Farmers who use the fertilizer evaluating the data that has been reported.
B
A scientist from the fertilizer company's own lab releasing the results of the study.
C
Consumers who eat the produce reading an article written about the study.
D
A scientist from an independent lab checking the results of the study.
7) Which of the following is not considered a model?
A
apple
B
recipe
C
map
D
drawing
8) Which statement is true of experiments?
A
When running an experiment try to use the smallest sample size that you can.
B
It is important to test only one variable at a time.
C
If something doesn't look right, it is okay to change the data to make it match your hypothesis.
D
It is important to make a conclusion before you run your experiment.
9) What must all scientists do immediately after they collect their data?
A
Make a new hypothesis.
B
Make more observations.
C
Draw a conclusion.
D
Analyze the data carefully.
10) In an experiment concerning the amount of sunlight on plant growth, all groups received the same water, fertilizer, and soil conditions. What are these called?
A
experimental factors
B
independent variables
C
constants
D
controls
*select an answer for all questions
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