Across
- 4. fuel that were formed mostly by decayed plants or animals
- 6. turbine driven by expanding hot gasses
- 8. energy from the sun
- 11. fuels made from crops
- 12. device that turns mechanical energy into electrical energy
- 15. electricity created by water
- 19. building with sails or vanes that turn in the wind
- 20. substance that does not typically conduct electricity
Down
- 1. renewable energy that comes from material made
- 2. absorbs heat or light energy from the sun
- 3. energy that cannot be replaced once it is used
- 5. heat from within the earth
- 7. the flow of electrically charged particles
- 9. form of energy
- 10. energy energy from a source that is not depleted when used
- 13. material that electricity can easily flow through
- 14. extracted from air flow using wind power
- 16. subatomic particle with a negative electronic charge
- 17. can be powered by wind or water
- 18. to provide light and heat or to work machines