| A | B |
|---|
| energy | the ability to do work |
| renewable resource | a resource that can be replaced within a reasonably short time |
| non-renewable resource | a resource that cannot be replaced after it is used |
| fossil fuel | a fuel that is formed over many years from the remains of living organisms |
| solar energy | a sustainable energy that comes from the sun and can be collected in many ways |
| sustainable energy | an energy source that can be continually used and will not run out |
| wind energy | a sustainable energy from the wind collected from wind turbines |
| natural gas | non-renewable energy made from the remains of plants and animals |
| geothermal energy | renewable energy from inside the earth |
| hydropower | renewable energy from moving water |
| hydrogen | a fuel that can be made by splitting hydrogen atoms from water |
| biomass | renewable energy made by burning of carbons such as corn or soy grown to make ethanol fuel |
| petroleum | non-renewable energy source found in the ground made from plants and animals (also called oil) |
| coal | a non-renewable energy source made from plants that were once alive |
| propane | non-renewable energy formed from tiny sea animals and plants |
| uranium | non-renewable energy source which from a mineral found in rocks |
| electricity | energy made by moving electrons. |
| methane | a renewable energy source made by the gas from rotting garbage |
| kinetic energy | the energy of movement |
| potential energy | stored energy, the energy of position, or gravitational energy |
