Energy Test Review

All objects have energy. The faster objects move, the _____ energy they have.

• more

• less

When an object is changing position, it has the energy of _____ .

• motion

• light

• sound

_____ moves or transfers energy from place to place as vibrations.

• light

• heat

• sound

Laila likes to skateboard. Sometimes when she lands a jump, her board hits the ground and makes a loud noise. Why does this happen?

• The ground absorbs all of the board's energy of motion.

• Some energy from the board is transformed into sound when the board hits the ground.

In the sound investigation, what happened to the salt grains when you spoke into the tube? Choose all that apply.

• Salt grains jumped.

• Sound energy was transferred from place to place.

• My breath blew the salt.

What transfers energy from the sun through space?

• electric currents

• light

Which of these observations provides the best evidence that light can transfer energy from place to place?

• The food under a heat lamp gets warmer.

• A firefly gives off light

Light is _____ you can see.

• heat

• energy

Thermal energy always moves from something warmer to something colder, making the colder thing

• colder

• warmer

Brandon poured hot cocoa into a cold mug. While he was drinking the cocoa, he noticed that the mug was warm. What explains this observation?

• The chemical energy of the cocoa moved into the mug.

• The heat of the cocoa flowed into the cold mug.