Chapter 9 Review: What is Energy?

It is the energy of movement.

• Potential energy

• Kinetic energy

• Motion energy

It is the capacity to produce a change.

• Work

• Force

• Energy

It is the person or object that receives the energy.

• Energy source

• Energy receiver

• Energy motion

It is the energy stored in objects.

• Kinetic energy

• Potential energy

• Motion energy

It is the person or object that transfers energy.

• Energy source

• Energy receiver

• Energy motion

The energy receiver is:

• the wind

• the windmill

The energy source is:

• the bike pedals

• the girl's legs

The energy source is:

• the plant

• the Sun

Are materials that let some light pass through them.

• Transparent materials

• Translucent materials

• Opaque materials

Are materials that don't let some light pass through them, but they absorb, reflect, or disperse it.

• Transparent materials

• Translucent materials

• Opaque materials