Question

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the water?

Answer 1

Water is the controlled/ independent or the constant variable.

Explanation:

• In a scientific experiment, an independent variable is the variable which is not dependent and it is not under the study. Hence, the value of this variable is kept constant.
• In the experiment mentioned in the question, water and light are kept equal hence they are the independent or constant variable,
• As fertilizers are being changed, hence it is the dependent variable.