Electricity: Types and flow

3. The thin piece of wire inside a light bulb that glows when the bulb is on.
5. Component that uses electrical energy to make light (and heat).
7. A material that does not allow something to pass through it.
8. Tiny particles that flow around a circuit.
10. pack A source of electricity with a low voltage, uses mains electricity and is safe to use in schools.
12. A source of electricity with a low ‘energy’ (low voltage). Cells push electrons round a circuit.
14. What is needed to make things happen or change.
17. Something in a circuit, such as a bulb, switch or motor.

1. electricity A force between charges that can attract or repel things.
2. Substance that allows something to pass through it (e.g. heat, electricity).
4. Force between materials that will move charges.
6. The unit for measuring current.
9. A piece of equipment that measures how much electricity is flowing around a circuit.
11. A way of transferring energy through wires.
13. A good conductor of heat and electricity well.
15. The flow of electricity around a circuit.
16. Component that uses electrical energy to make