| A | B |
| Kinetic energy | Energy of motion |
| Kyoto Protocol | An international agreement on climate change |
| Law of conservation of energy | energy cannot be created or destroyed but does change forms. |
| Joule (J) | A unit of energy |
| Greenhouse Gases | A gas that traps heat in the atmosphere |
| Gamma decay | Radioactive decay-a high-energy photon. |
| Fossil Fuels | Decayed plant or animal material coal, oil, or natural gas |
| Fuel Cell | a reaction between-hydrogen, and oxygen |
| Energy | The ability to do work or cause a change. |
| Electromagnetic spectrum | Includes infrared, visible light, UV, X-rays and gamma rays. |
| Carbon cycle | A major cycle in the environment returns CO2. |
| Biomass | Plant material or waste used as a fuel |
| Nonrenewable Resources | A resource that is limited-oil or coal |
| Photosynthesis | Plants use suns energy to produce food |
| Potential energy | The energy of an objects postion |
| Power | The amount of work done or energy used in Watts. |
| Renewable Resource | An energy source that is constantly replenished-wind power, direct solar energy, water power. |
| Solar energy | Energy from the sun |
| Wind farm | A group of wind generators tied together to produce energy |
| Nuclear energy | Is released by splitting atoms(fission). |