Across
- 3. A type of energy that is generated when moving water turns turbines.
- 7. A type of energy that is generated when heat from the sun is converted into electricity by photovoltaic cells.
- 9. A fossil fuel formed from trees and plants.
- 10. A type of fossil fuel found underground. Mostly methane but can include ethane, butane, and other gases.
- 11. A type of energy when wind turns turbines.
- 13. A type of energy created in reactors using uranium to heat water.
- 14. Manufactured from alcohols and other chemicals extracted from plant and tree residue.
- 15. A type of fossil fuel formed as a byproduct of natural gas processing.
Down
- 1. A type of fuel that is a byproduct of chemically mixing hydrogen and oxygen to produce electricity. Stored in batteries.
- 2. Usable materials and substances that occur in nature.
- 4. Energy produced from vegetable oils, animal fats, and other byproducts of agricultural or forestry processing.
- 5. Resources that are used more quickly than they can be replaced.
- 6. Fuel formed from the remains of organisms.
- 8. Resources that replenish naturally over time.
- 12. Formed when heat and pressure turn decayed matter into oil.