| A | B |
|---|
| alternating current | current in which the electrons reverse their direction regularly |
| biomass | a material that comes from a living thing and can be used as fuel |
| direct current | current consisting of electrons that flow constantly in one direction |
| generator | device using electromagnets to convert mechanical to electrical energy |
| geothermal | energy produced from the heat energy within the earth |
| hydroelectric | generating electricity from the falling or flowing of water |
| mechanical energy | energy associated with motion |
| tidal energy | energy produced by the rise and fall of the tides |
| wind energy | energy produced by the flowing wind |
| wind farm | a facility that uses wind mills to capture energy and produce electricity |
