Scientific Methods Answers

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( variable).

A
independent
B
dependent
3

Adding salt ( variable)

A
independent
B
dependent
7

Do your answers to the previous questions satisfy the following statements?

A
The dependent variable is changed by the independent variable.
B
The independent variable causes a change to another variable.
C
The independent variable is not changed by another variable.
8

Identify from the following list which examples are controlled experiments.You make two pitchers of lemonade and

A
only change the amount of lemonade mix you add.
B
only change the amount of water you add.
C
change both the amount of water and the amount of lemonade.
10

Can you identify what object is being represented by the model on the right?

A
arc of a circle
B
amount of radiation
C
area of a circle
12

Which of the following examples below could be used to summarize the results of scientific experiments?

A
graphing experimental results
B
drawing a picture
C
forming a hypothesis
D
asking questions
E
creating a visual model
13

Question text not available

A
qualitative
B
quantitative
14

Question text not available

A
qualitative
B
quantitative
15

Question text not available

A
qualitative
B
quantitative
16

Choose an appropriate question to ask when you add salt to water to make pasta.

A
What is the effect of adding salt to boiling water?
B
What is the effect of salt on the water temperature?
20

If you wanted to perform a controlled experiment to test the effect of temperature on the pressure of a bicycle tire, which of the following would be necessary?

A
two identical bicycle tires
B
one bicycle tire kept at a constant temperature
C
one bicycle tire that experiences changes in temperature
D
different amounts of air in each tire

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