| A | B |
|---|
| fossil fuels | coal, oil (petroleum), natural gas and propane |
| biomass | plant material that is burned for its energy |
| geothermal energy | comes from the heat within the earth |
| hydropower | generated by moving water |
| wind | wind turn rotating machines, called turbines, to change the wind's energy into electrical energy |
| nuclear energy | produced when the nuclei of atoms split apart (fission) or fuse together (fusion). |
| solar energy | radiant energy of the Sun, often turned into electrical energy with the help of solar cells |
| Chemical energy | energy produced by the breaking of bonds in an atom |
| Electrical energy | energy produced by the movement of charged particles (electrons) |
| Mechanical energy | energy of moving parts |
| Non-renewable | a resource that cannot be replaced or remade easily such as fossil fuels |
| Renewable | a resource that is easily replaced or regenerated (solar, wind) |
| Sound energy | energy created by the vibration of molecules as sound waves travel |
| Thermal energy | energy from heat |
