Naming types of energy

Science · Energy · ages 7-9

Name ______________________ Date ____________

What type of energy does a moving ball have?
- Potential energy
- Kinetic energy
- Chemical energy
What type of energy does a stretched spring have?
- Kinetic energy
- Potential energy
- Sound energy
What type of energy is stored inside a battery?
- Chemical energy
- Light energy
- Sound energy
A toaster changes electrical energy into heat energy to toast your bread.
Circle one: True False
A torch changes chemical energy from its battery into light energy. Which term names this change of energy type?
- Energy transfer
- Stored energy
- Energy transformation
Which has potential energy stored because it is stretched?
- A rubber band held stretched
- Sound travelling from a speaker
- A ball rolling across the floor
You hold both ends of a stretched rubber band, then let it relax without letting go. What energy change makes it move back?
- Kinetic energy changes into potential energy
- Chemical energy changes into electrical energy
- Potential energy changes into kinetic energy
Leo says, 'A moving bike has kinetic energy, so its tyres cannot have thermal energy.' Which sentence corrects his claim?
- A moving bike can have kinetic energy but never thermal energy
- A moving bike can have thermal energy but never kinetic energy
- A moving bike can have both kinetic and thermal energy

Answer key

For grown-ups. Fold this page away before handing over the rest.

Kinetic energy · Movement means kinetic energy. The ball has energy because it is moving.
Potential energy · A stretched spring holds stored energy, called potential energy, until it is let go.
Chemical energy · A battery stores chemical energy until a device uses it.
True · Toasters use electrical energy and turn it into heat energy for toasting.
Energy transformation · Transformation names a change of energy type. Transfer names energy moving between objects or places.
A rubber band held stretched · The rubber band's changed shape stores potential energy.
Potential energy changes into kinetic energy · Some potential energy stored by stretching becomes kinetic energy as the band moves back.
A moving bike can have both kinetic and thermal energy · An object can have more than one type of energy. The bike's movement and its tyres' thermal energy can exist together.