Kate 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 ten measured the temperature of the air in each box. In this experiment,
the temperature of the air recorded is a constant variable.

A. True
B. False

PLEASE HELP

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of