Electricity
Currents of electricity can be turned off and on with a switch.
A complete circuit is necessary to make a bell ring.
A short circuit may make a bell ring all the time.
Many metals are good conductors of electricity.
A fuse helps protect homes from fire.
A light bulb lights because the filament becomes very hot and gives off light.
Static electricity can be produced by rubbing.
Like electric charges repel each other and unlike electric charges attract each other.
