Energy Review

What is energy?

• the amount of space an object takes up

• the force that pulls us down to the center of the Earth

• the amount of matter in an object

• the ability to do work

Name the 2 main types of energy that all other “energys” fall under.

• Thermal and electric

• Kinetic and potential

• Gravitational and sound

• Electric and radiant

What is potential energy? Give an example.

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What is an example of potential energy?

• A book resting on a shelf

• A person running on a track

• Kicking a soccer ball into a net

• Writing notes on paper

Gravitational potential energy is determined by an object's

• volume and density

• mass and weight

• mass and height

• fission and fusion

What is gravity?

• The force that pulls us up to outer space

• The force that pulls us towards the Equator

• The force that pulls us next to other people

• The force that pulls us down to the center of the Earth

If you increase the height of an object, its gravitational potential energy

• stays the same

• decreases

• increases

• changes into kinetic energy

What is kinetic energy?

• Energy of motion

• Stored energy

• Energy measured in electrical charges

• Energy measured in waves that makes things vibrate

What is thermal energy?

• How warm something is

• Energy measured by the movement of atoms and molecules

• Stored energy only in hot objects

• Energy that only works when something is warm

What happens to the thermal energy of atoms/molecules in substances with higher temperatures?

• It increases because the molecules are moving more.

• It decreases because the molecules are moving more.

• It is not affected by temperature changes.

• It stays the same.