Which of these is a good insulator?

• tap water

• steel

• plastic

• gold

Which of these is a good conductor?

• plastic

• wood

• glass

• copper

Which of these is a unit of electrical energy?

• volt

• kilogram

• tonne

• metre

In what units is force measured in?

• kilograms

• watts

• newtons

• kilometres per second

1 newton is approximately equal to:

• 10 grams

• 100 grams

• 1 kilogram

• 1 tonne

This ball has:

• electrical energy

• heat energy

• kinetic energy

• nuclear energy

The stationary car on the hill has:

• gravitational potential energy

• maximum kinetic energy

• elastic potential energy

• sound energy

In this clip gravitational potential can be seen ____________ into kinetic energy.

• transferring

• transforming

Friction is...

• a force that acts to slow down movement

• a force that acts to speed up movement

• increased by lubrication

• always a problem in our lives

True or false: The light in this circuit will not go on.

• True

• False