| A | B |
|---|
| chemical energy | energy released by chemical changes |
| dry cell | a battery that changes chemical energy to electric energy in a nonliquid material |
| electric energy | energy carried by electricity |
| generator | is a device that uses a magnet to change mechanical energy into electricity |
| kilowatt-hour | the unit used to measure electric energy:1,000 watts used in an hour |
| kinetic energy | energy of motion |
| mechanical energy | energy that moves objects |
| nuclear energy | energy released when the nuclei of atoms split or join |
| potential energy | stored energy |
| power | the amount of energy used in a certain amount of time |
| radiant energy | energy that can move through empty space |
| thermal energy | the kinetic energy of all the particles in an object |
| watt | unit used to measure power |
| atoms | basic bits of matter |
| neutron | the part of an atom that has no charge |
| proton | the part of an atom that has a positive charge |
| electron | the part of an atom that has a negative charge |
| electric force | a force that holds the atoms in your body together |
| closed circuit | lets an electric currect flow through a path without stopping |
| open circuit | electric current can not flow through because there is not a path connecting all three parts of a circuit |
| conductors | kinds of matter that current does flow easily through |
| insulators | kind of matter that current does not flow easily through |
