Across
- 1. Ratio of useful output energy to energy put in
- 5. Uses water to generate energy
- 6. Gaseous fossil fuel
- 8. Energy derived from organic matter
- 9. The main cause of pollution around the world
- 10. Able to be naturally replenished
- 12. Created through nuclear fission
- 14. The ability to do work
- 15. Liquid fossil fuel
Down
- 2. Using resources carefully and avoiding waste
- 3. Energy from the sun
- 4. Uses the heat inside the earth for energy
- 7. Energy gathered from the oceans tides
- 11. Used to create energy via turbines
- 13. Non-renewable and burned to create energy