Across
- 3. Used to drill holes in the ground to get oil.
- 5. Formed over thousands of years from the buried remains of ancient sea plants and animals.
- 8. A structure that transfers wind energy into electric energy.
- 13. mechanical energy is converted into electrical energy.
- 14. An energy source using heat and energy from the earth.
- 15. Long-term heating of Earth's surface.
Down
- 1. Energy made from the natural flow of water.
- 2. A renewable energy source made from plants and animals.
- 4. Gases in the earth's atmosphere that trap heat.
- 6. A fossil fuel that gets pumped out the ground.
- 7. An energy source that uses wind to create electricity.
- 9. Creates radioactive waste.
- 10. Water is heated by coal or natural gas.
- 11. A fossil fuel that gets mined.
- 12. Energy from the sun converted into electricity.