Bart believes that mice exposed to radio waves will become extra strong (maybe he's been reading too much Radioactive Man). He decides to perform this experiment by placing 10 mice near a radio for 5 hours. He compared these 10 mice to another 10 mice that had not been exposed. His test consisted of a heavy block of wood that blocked the mouse food. he found that 8 out of 10 of the radio-waved mice were able to push the block away. 7 out of 10 of the other mice were able to do the same. In Bart's Experiment, identify the Independent Variable.

Group of answer choices

Amount of Time for Test

Exposed Time to Radio Waves

Number of Mice in each Group

Number of Mice that pushed block away

Size of Blocks

In Bart's Experiment, identify the Dependent Variable.

Group of answer choices

Amount of Time for Test

Exposed Time to Radio Waves

Number of Mice in each Group

Number of Mice that pushed block away

Size of Blocks

In Bart's Experiment, identify the three Controlled Variables. (must choose all three!)

Group of answer choices

Amount of Time for Test

Exposed Time to Radio Waves

Number of Mice in each Group

Number of Mice that pushed block away

Size of Blocks