Make up Energy Test

The ____ energy of an object increases with its height.

• thermal

• gravitational potential

An object that has kinetic energy must be ________

• in motion

• changing direction

The law of ____ states that energy in a system can change forms but can never be created or destroyed.

• construction of energy

• conservation of energy

The kinetic energy of an object increases as its _______ increases.

• potential energy

• speed

How much force is required to lift a rock 8 m vertically if 80 J of work were done?

• 10 N

• 15 J

Why does a ball eventually stop bouncing when dropped?

• All of the ball’s energy is eventually converted to potential energy when the ball stops bouncing.

• Some of the ball’s energy is converted to other forms, such as thermal and sound.

Heat energy will normally flow from:

• B to C

• C to B

Energy stored in food would be considered

• kinetic

• chemical potential

Conduction is the transfer of heat energy by______

• direct particle contact

• density differences

An example of an energy conversion from kinetic to thermal energy would be

• friction

• flower