Unit 6: Electricity

Look at the picture. How do we use electricity to:

- make light?
- make sound?
- heat things up?
- cool things down?
- make things move?

Which cell will fit into which electrical appliance? Choose from flashlight, watch and mobile phone.

Cell a:

Which cell will fit into which electrical appliance? Choose from flashlight, watch and mobile phone.

Cell b:

Which cell will fit into which electrical appliance? Choose from flashlight, watch and mobile phone.

Cell c:

What might happen to you if you touch an electric wall socket with wet hands?

What might happen if you touch a broken cell?

Try to say why these two circuits won't work.

What would happen if mains wires did not have a plastic covering?

**Project: Invent a new electrical appliance**

People invent new appliances every day. Many new appliances use electricity.

Could you invent an appliance to:

- take your pet for a walk?
- play ball with you?
- add lights to your shoes?

Perhaps you have another idea?

Draw your idea for a new electrical appliance.

Does your appliance use cells or mains electricity?

Does your appliance have a switch?

Say what your appliance does.

Name these things.

Are these things safe or dangerous?

Look at thing **a**.

Are these things safe or dangerous?

Look at thing **b**.

Are these things safe or dangerous?

Look at thing **c**.

Are these things safe or dangerous?

Look at thing **d**.

Will these circuits work?

Look at circuit **a**.

Will these circuits work?

Look at circuit **b**.

Will these circuits work?

Look at circuit **c**.

Will the lamp be on or off?

Look at circuit **a**.

Will the lamp be on or off?

Look at circuit **b**.

Will the lamp be on or off?

Look at circuit **c**.