1. Mr. Smith wanted to see if the color of light shined on a plant had an effect on the number of
leaves it had. He gathered 2 groups of the same species of plants, gave them the same amount
of water, and did the test for the same amount of time. On one group of plants he used white
light. In the second group he changed the light color to red. Identify:
Independent variable:
Dependent variable:
Constants:
Control group (What would Mr. Smith use as a control group?):
Experimental group (what would Mr. Smith used as an experimental group?)
