| A | B |
|---|
| lightning | a giant spark of electric charges moving between a cloud and the ground, between a cloud and another cloud, or within a cloud |
| electric current | the steady flow of electric charges, usually in a wire |
| switch | the part of a circuit that closes the circuit and allows electricity to flow or opens the circuit and prevents the flow of electricity |
| GFCI outlet | a special outlet with a safety switch that instantly switches off in some dangerous situations to help prevent a shock |
| volt | a unit used to measure how strongly the electrons in a wire are pushed |
| watt | a unit used to measure how fast electrical energy is used |
| kilowatt | 1,000 watts |
| kilowatt hour | a unit used to measure the amount of electrical energy |
| generator | a device that uses a magnet to change mechanical energy into electrical energy |
