Energy Can Change Forms

True or false: We can just use energy from the sun to play our TVs.

• True

• False

Almost all forms of energy can be traced back to the ____________.

• water

• sun

• electricity

• fuel

We use energy to produce ____________

• motion and electricity

• motion and heat

• fire and heat

• food and heat

Where do you get energy to climb stairs?

• From the sun

• From your food

• From electricity

• from fossil fuels

Why does a car engine feel hot after a long ride?

• it contains a lot of energy

• the sun heats the engine

• the energy of motion produces waste heat

• the battery keeps it warm