Energy Quiz

The energy of an object increases with its height. What type of energy is this?

• chemical potential

• kinetic

• thermal

• gravitational potential

An object that has kinetic energy must be

• lifted above Earth’s surface

• in motion

• at rest

• changing direction

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

• conservation of energy

• conservation of energy

• conversion of energy

• construction of energy

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

• height

• speed

• volume

• potential energy

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

• 80 J

• 80 N

• 10 J

• 10 N

Energy stored in food would be considered

• chemical potential

• thermal

• kinetic

• gravitational potential

Conduction is the transfer of heat energy by

• direct particle contact

• electromagnetic waves

• density differences

• movement through a vacuum

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

• friction

• television

• flower

• gravity

Green plants convert light energy from the sun into ___ during photosynthesis.

• gravitational potential energy

• chemical potential energy

• thermal energy

• mechanical energy

The mechanical energy of a coconut falling from a tree

• doesn’t exist

• increases

• decreases

• remains constant