How does my lighthouse work?

My lighthouse needs:

A battery

The battery is a source of electrical energy.

My lighthouse needs:

A light

The light turns electrical energy into light energy.

My lighthouse needs:

Wires

The wires connect the battery to the light.

Why do we need two wires?

Electric lights only work if the electricity can get from the battery to the light…

…and get back to the battery again.

You’ll hear people talking about electric circuits.

Why do you think it’s called a circuit?

Why does a battery need two wires, but some plugs need three?The third wire in a plug is a safety wire.

Staying safe

Never do experiments with electricity from a socket.

Never take something with a plug on it apart.

Never stick your fingers into a socket.

Staying safe

Never poke about inside a piece of electrical equipment that plugs into the socket.

Don’t worry. Your lighthouse is perfectly safe!