| A | B |
|---|
| joule | a unit for measuring work and energy. |
| fuse | a safety device that melts and opens a circuit when too much current is flowing. |
| power | energy divided by time. |
| wet cell | a battery that changes chemical energy to electric in a liquid. |
| kilowatt-hour | 1,000 watts used in one hour. |
| circuit breaker | a safety device that switches off and opens a circuit when too much current is flowing. |
| watt | a unit for measuring power. |
| force | anything that changes the speed or direction of an object. |
| generator | a device that uses a magnet to change mechanical energy into electricty. |
| dry cell | a battery that changes chemical energy to electric energy in a nonliquid material. |
| newton | the unit for measuring force. |
| chemical energy | energy released by chemical changes. |
| radiant energy | energy that can flow through empty space.. |
| nuclear energy | energy released when atoms split or join. |
| potential energy | stored energy an object has because of its position. |
| kinetic energy | the energy of motion |
| electric energy | energy carried by electricity. |
| mechanical energy | energy that can move object. |
