| A | B |
| energy | the ability to do work |
| kinetic energy | energy of motion |
| equation for kinetic energy | KE = mv squared divided by 2 |
| potential energy | energy of an object has because of its position |
| gravitational potential energy | = weight X height |
| work | = force X distance |
| mechanical energy | = potential energy + kinetic energy |
| thermal energy | all of the kinetic energy due to random motion of the particles that make up an object |
| chemical energy | energy of a compound that changes as its atoms are rearranged |
| electrical energy | energy of moving electrons |
| sound energy | energy caused by an object's vibrations |
| light energy | produced by the vibrations of electrically charged particles |
| nuclear energy | energy that comes from changes in the nucleus |