| A | B |
|---|
| energy | the ability to cause change |
| kinetic energy | energy a moving object has because of its motion; depends on mass and speed: KE = 1/2 m v v |
| joule | SI unit of energy |
| potential energy | stored energy due to position. |
| elastic potential energy | energy stored by something that can stretch or compress. |
| chemical potential energy | energy stored in the chemical bonds between atoms. |
| gravitational potential energy | energy stored by objects due to their position above the Earth's surface: GPE = (m)(g)(h) |
| mechanical energy | total amount of potential and kinetic energy in a system: ME = PE + KE |
| Law of Conservation of Energy | energy cannot be created or destroyed |
| friction | force that converts mechanical energy into thermal energy |
| nuclear fission and fusion | nuclear reactions that convert a small amount of mass in a nucleus into an enormous amount of energy. |
