| A | B |
|---|
| Energy | The ability to do work. |
| Kinetic Energy | Energy of motion |
| Potential Energy | Energy that is stored |
| Gravitational Energy | Potential energy based on gravity's pull |
| Law of Conservation of Energy | Energy cannot be created or destroyed. |
| fossil fuels | fossilized forms of energy |
| oil reservoirs | large lakes of oil under the ground. |
| coal | fossil fuel composed of dead plants pressured into a solid form. |
| natural gas | gaseous fossil fuel also called mepthane. |
| nuclear fission | the splitting of atoms releasing lots of energy. |
| renewable energy | energy sources that are naturally replentished. |
| hydropower | power derived frommoving water. |
| hydroelectricity | electrical power derived from moving water |
| solar energy | energy derived form the sun. |
| solar cells | thin plates that turn solar energy directly into electricity. |
| biofuels | energy types that come from living things. |
