| Term | Definition |
|---|
| coal | Nonrenewable limited supply that took millions of years to transform from plant debris in swamps into burnable black rock |
| crude oil (petroleum) | Nonrenewable limited supply that took thousands of years to transform from sea plankton into burnable black liguid |
| natural gas found with oil and coal | Nonrenewable limited supply of gases (not gasoline) that took thousands to millions of years to form with crude oil and coal |
| nuclear energy from uranium | Nonrenewable limited supply of uranium that is mined from rock. The U atoms were created billions of years ago before the earth was formed. |
| natural gas in landfills and lake bottoms | Renewable gases (not gasoline) that formed within several years by burial of plant debris |
| hydropower | Renewable source of energy from the forces of moving water |
| hydrogen power | Renewable source of energy from the use of hydrogen gas obtained from water and hydrocarbons. |
| wind power | Renewable source of energy from the force of wind. |
| solar power | Renewable source of energy from the sun. |
| geothermal power | Renewable source of heat energy from the earth. |
| biomass | Renewable plant solids such as wood and grass can be burned and regrown in our lifetime. Note: it pollutes the air then removes some pollution. |
| biofuels | Renewable plant liguids such as ethanol (from corn), biodeisel (from veggie and used cooking oil), and algae fuel (oil squeezed out of algae) can be burned and regrown in our lifetime. Note: it pollutes the air then removes some pollution. |
Combine with other sets
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