ate gathered three boxes of the same size made of different materials: glass, clear plastic, and aluminum painted black. She placed them on a window sill in the sun for an hour and then measured the warmth of the air in each box.

Question

In this experiment, what is the warmth of the air?

Responses

a control
a control

an independent variable
an independent variable

a constant
a constant

a dependent variable

Answer 1

In this experiment, the warmth of the air in each box is a dependent variable.

The dependent variable is the one that is measured or observed in response to changes in the independent variable. In this case, the independent variable would be the type of material of the boxes (glass, clear plastic, aluminum painted black), and the warmth of the air is what is being measured after the boxes have been exposed to sunlight.