| A | B |
| Chemical Energy | Potential energy stored in bonds and is released when the bonds are broken |
| Heat Energy | Energy transferred from warm/hot to cold |
| Radiant Energy | Light energy traveling in transverse waves |
| Mechanical Energy | Energy of motion |
| Electrical Energy | Energy moving electric charges |
| Solar Energy | Energy generated from the sun |
| Geothermal Energy | Energy from beneath the Earth’s surface |
| Law of Conservation of Energy | Energy cannot be created of destroyed |
| Potential Energy | Stored energy |
| Kinetic Energy | Energy in motion |
| Nonrenewable resources | A natural resource that is not replaced as it is used |
| Fossil Fuel | Energy rich substances (coal, oil, or natural gas) formed from the remains of living organisms |
| Solar collector | Devices for capturing the sun’s energy over a large area and focusing it on a small area, thereby concentrating it |
| Hydroelectricity | Energy generated from flowing water |
| Nuclear Fusion | Joining of nuclei |
| Renewable Energy Resources | A resource that is naturally replaced in a relatively short time |
| Alternative Fuel | A fuel source other than fossil fuels |