| A | B |
|---|
| energy | the ability to do work |
| kinetic energy | the energy of motion |
| potential energy | energy that is stored as a result of position or shape |
| gravitational potential energy | potential energy based on a object's height |
| elastic potential energy | potential energy of an object that is stretched or compressed |
| mechanical energy | energy associated with the motion and position of everyday objects |
| thermal energy | total potential and kinetic enrgy of all the microscopic particles in an object |
| chemical energy | energy stored in chemical bonds |
| electrical energy | energy associated with electric charges |
| electromagnetic energy | a form of energy that travels through space in the form of waves |
| nuclear energy | energy stored in atomic nuclei |
| energy conversion | the process of changing energy from one form to another |
| law of conservation of energy | energy cannot be created or destroyed |
| nonrenewable energy resources | energy sources that exist in limited quantities and cannot be replaced |
| fossil fuels | oil, natural gases, coal |
| renewable energy resources | resources that can be replaced in a relatively short period of time |
| hydroelectric energy | energy obtained from flowing water |
| solar enregy | sunlight is converted into usable energy |
| geothermal energy | thermal energy beneath the Earth's surface |
| biomass energy | chemical energy stored in living things |
| hydrogen fuel cell | this device generates electricity by reacting hydrogen and oxygen |
| energy conservation | finding ways to use less energy or to use energy more efficiently |
