Cell – a device, which converts chemical energy into electrical energy.
Bulb – the glass part of an electric lamp, which gives out light when electricity passes through it.
Battery - collection of cells that converts chemical energy into electrical energy
Circuit – a complete route which an electric current can flow around
Switch - a small control for an electrical device which you use to turn the device on or off
Wires - a long thin piece of metal that is used to fasten things or to carry electric current