Question

savanna is conducting an experiment if the color or water affect its cooling rate. in the experiment she adds food dye cups of hot water. which cup is the control? A. the cup with red food dye B. the cup with blue food dye. C. the cup with all of food dyes combined D. the cup with no food dye

Answer 1

Roughly speaking, the control is the thing that doesn't have anything done to it. Which is that here?

Answer 2

Or it's the thing that doesn't have anything done to it given what is being altered in the experiment. What is being altered is the color of the food dye. Hence the control is that which doesn't have any color of food dye.

Answer 3

so it is D

Answer 4

Yes

Answer 5

thank you! :)