| A | B |
|---|
| energy | the ability to do work. |
| kinetic energy | the energy an object has due to its motion |
| potential energy | energy that is stored as a result of position or shape |
| gravitational potential energy | potential energy that depends upon an object's height above a reference point |
| elastic potential energy | the potential energy of an object that is stretched or compressed |
| mechanical energy | the energy associated with the motion and position of everyday objects |
| thermal energy | the total potential and kinetic energy related to the motion of all the particles in an object |
| chemical energy | the energy stored in chemical bonds |
| electrical energy | the energy associated with electric charges |
| electromagnetic energy | a form of energy consisting of changing electric and magnetic fields |
| nuclear energy | the energy stored in atomic nuclei |
| energy conversion | the process of changing energy from one form to another |
| nonrenewable energy resources | a source of energy that exists in limited quantities and, once used, cannot be replaced except over the course of a million years |
| fossil fuels | rich deposits of hydrocarbon mixtures that formed from the remains of organisms |
| renewable energy resources | a source of energy that can be replaced in a relatively short period of time |
| hydroelectric energy | energy obtained from flowing water |
| solar energy | sunlight that is converted into usable energy |
| geothermal energy | thermal energy beneath Earth's surface |
| biomass energy | the chemical energy stored in living things |
| hydrogen fuel cell | a cell that generates electricity from a controlled reaction between hydrogen and oxygen |
| energy conservation | the practice of finding ways to use less energy or to use energy more efficiently |
