7I - Energy

We get the energy that our bodies need from energy stored in:

• food

• water

• warm clothes

• hot baths

The units for measuring energy are:

• horsepower

• degrees

• joules

• newtons

People who dig holes in the road need a lot of energy stored in their food because:

• they have long tea breaks

• they always forget their sandwiches.

• they sometimes have to work in the rain.

• they transfer a lot of energy while they work.

You can find out how much energy is in a peanut by:

• burning it, and seeing how hot it makes a test tube of water.

• eating it, and seeing how full you feel.

• weighing it.

• seeing what colour it is.

How do we describe the way that energy is stored in batteries and food?

• kinetic energy

• chemical energy

• thermal energy

• potential energy

Which of these is not a way of transferring energy?

• light

• forces

• heating

• strain

Which two stores is energy transferred between when you heat a pan of water on a gas cooker?

• thermal to chemical

• electrical to thermal

• chemical to thermal

• kinetic to strain

A stretched bow is a store of energy (strain energy). What happens to the energy when the arrow is fired?

• Forces transfer the energy to kinetic energy in the arrow.

• Energy is stored as chemical energy

• Movement energy is transferred to sound energy.

• Force energy is transferred by movement.

Fossil fuels are formed from:

• water.

• electricity.

• dead plants and animals.

• rocks.

Fossil fuels are non-renewable fuels because:

• they give out heat when they burn.

• they were formed from fossils.

• they are expensive.

• they cannot be replaced once they are burnt.