Across
- 7. the beginning or end of a nuclear reaction
- 8. chemical compounds that have atoms
- 10. a enhanced geothermal system
- 12. Is mainly used for transportation
- 14. a layer of material that traps the air to help block the transfer of heat
- 15. can be replenished in a relatively short time
- 16. the going apart or coming together to create energy
- 17. coal, oil, and natural gas
- 18. electricity produced by flowing water
- 20. a renewable energy source used to create energy via wind turbines
- 22. is where crude oil is heated and separated into fuel
- 23. uses less energy than incandescent bulbs
- 24. heat from earths interior
- 26. wood, plant parts, and food wastes that can be used as fuels
- 27. is mainly used for electric power
- 28. light and heat given off by the sun
- 29. turns to produce energy
Down
- 1. coming together
- 2. one of the three major types of fossil fuels
- 3. collects suns energy
- 4. energy carrier
- 5. breaking apart
- 6. simpelist element known
- 9. uses more energy than compact fluorescent
- 11. cannot be replenished in a short amount time
- 13. not using energy
- 19. using smaller percent of energy
- 21. compounds made from oil like plastic, makeup, and paint
- 24. a mixture of gas and alcohol
- 25. when fuel rods get so hot it starts to melt