Across
- 1. energy that is created by flowing water
- 5. cool air that is descending into the ocean but is blown into land by the sea breeze
- 6. what is most coal used for in the USA
- 9. device that is used to measure the wind's speed
- 10. gases that absorb the infrared radiation, making the earth warmer.
- 13. a factory that has crude oil is heated and separated into fuel
- 14. energy that is created by using heat found inside the earth.
- 17. help to create human reservoirs
- 18. compounds that are made from oil like, Plastic and paint
- 20. a fuel made by the remains of the past living organisms
- 21. the effectiveness of the product in relation to its cost
- 24. energy created from the waves
- 25. substance that provides energy
- 26. energy created by the combination of two cells
- 27. energy that is created by sunlight
- 29. help to capture solar energy
- 30. a chemical compound that can be used as an energy
Down
- 2. energy that is created by using the fast wind
- 3. source that is being used much faster than it can be produced
- 4. a machine that is made to help produce power and in normally uses a wheel or rotor.
- 7. what is most oil used mostly for
- 8. crossword
- 11. energy used for treating metals, processing food and this cannot be found on earth.
- 12. energy that could come from butanol
- 15. help keep heat trapped in a building
- 16. mixture of gasoline and alcohol
- 19. energy that is created by the splitting of two cells
- 22. is a turning heat energy into machinal energy
- 23. The source is being produced as the same rate as it is being used
- 28. the fuel rods get so heated they melt