| A | B |
| Biomass Energy | Energy that is obtained releasing the stored energy in living things. |
| Chemical Energy | Energy that is stored in chemical bonds. |
| Elastic Potential Energy | Potential energy that depends on an object being stretched or compressed. |
| Electrical Energy | Energy that is associated with electric charges. |
| Electromagnetic Energy | Energy that travels through space in the form of waves. |
| Energy Conservation | Finding ways to use less energy or through using energy more efficiently. |
| Energy Conversion | The process of changing energy from one form to another. |
| Energy | The ability to do work. |
| Fossil Fuels | Fuels formed from the remains of once living organisms. |
| Geothermal Energy | Energy that is obtained from deep within the Earth |
| Gravitational Potential Energy | Potential energy that depends on the objects height. |
| Hydroelectric Energy | Energy obtained from flowing water. |
| Kinetic Energy | Energy of motion |
| Mechanical Energy | Energy that is associated with motion and position of everyday objects. |
| Nonrenewable Energy Sources | Materials that exist in limited quantities. |
| Nuclear Energy | Energy that is stored in atomic nuclei. |
| Potential Energy | Stored energy. |
| Renewable Energy Sources | Materials that can be replaced in a reasonable amount of time. |
| Solar Energy | Energy that is obtained by converting sunlight. |
| Thermal Energy | Energy that is the sum of particles total potential and kinetic energy. |