Question

5. In a scientific investigation, a scientist is testing to see

the effect of light intensity (strength of the light) on
plant growth. During her investigation, the scientist
ensures that all subject plants get the same amount of
water, are planted in the same type of soil and placed
in a lab room at the same temperature. Each of these
factors are an example of a
A) control group
B) experimental group
C) control variable
D) independent variable

Answer 1

Answer: C control variable

Explanation: I say control variable because it is what is being kept the same during the investigation. It is not of primary concern in the experimental outcome because it is all kept the same in each of the subject plants.

:)

(THIS IS WHAT I THINK!!!)