Physical Science Chapter 3: Forms of Energy

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1. The ability to do work is

• friction
• sound
• energy
• motion

2. On a roller coaster ride, the car has the most potential energy.

• at the bottom of a hill.
• halfway up the hill.
• at the top of the hill.
• halfway down the hill.

3. A car battergy on a shelf in a store has

• potential energy.
• kinetic energy.
• radiant energy.
• thermal energy.

4. As potential energy in a falling object begins to decrease,

• it is gone forever.
• it changes into kinetic energy.
• it keeps decreasing by half.
• the Earth's total supply of potential energy decreases.

5. Some radiant energy comes from

• the Earth's core.
• the movement of molecules.
• the splitting of an atom.
• the sun.

6. Under ordinary circumstances, energy can do all of the following EXCEPT

• be created.
• change from radiant to thermal energy.
• change from kinetic to potential energy.
• Travel long distances

7. A form of energy that uses waves to travel is

• radiant energy.
• thermal energy.
• chemical energy.
• mechanical energy.

8. To check for cavities, dentists use

• microwaves
• gamma rays
• x-rays
• radio waves