Question

1. drew observed in an experiment that algae in a nearby lake could be found at six meters below the water’s surface on a clear day. on a cloudy day, drew noted that the algae sat only one meter below the surface of the water. what was the dependent variable in drew’s experiment?

a. the sky conditions on a particular day

b. the lake that drew observed

c. the depth at which drew found the algae

d. the amount of algae measured

Explanation:

To determine the dependent variable, we recall that the dependent variable is the one that changes in response to the independent variable. In this experiment, the sky conditions (clear or cloudy) are the independent variable. The depth of the algae changes based on the sky conditions. Option a is the independent variable. Option b (the lake) is a constant. Option d (amount of algae) is not measured here. Option c (depth of algae) depends on sky conditions, so it's the dependent variable.

Answer:

c. the depth at which Drew found the algae