energy crossword

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Across
  1. 3. keeps homes warm
  2. 6. a reliable source of energy that uses big turbines that spin
  3. 7. panels that use the sun to trap and store electricity
  4. 9. chemical compound that contains carbon and hydrogen
  5. 10. hydropower is __________
  6. 15. comes from farmwood crops farms animal waste
  7. 16. another name for oil
  8. 18. E=mc2
  9. 20. catching steam and heated water for energy
  10. 22. what happens if we use nuclear fusion as a power source
  11. 24. rocked fuel is main use of __________________
  12. 25. what coal is mostly used to make
  13. 27. adding alcohol to gasoline
  14. 28. getting energy from water
  15. 29. mixture of methane and other gases
Down
  1. 1. hydrogen_______ cleanly
  2. 2. sources of hydroelectric power
  3. 4. what oil is mainly used for
  4. 5. energy rich substances
  5. 8. original source of energy in wind and flowing water
  6. 11. when oil is heated into fluid
  7. 12. percentage of coal mined and exported from US to other countries
  8. 13. formed from paint remains
  9. 14. compounds made from oil
  10. 17. the change of one form of energy to another
  11. 19. energy released by _________
  12. 21. three types of natural gas
  13. 23. energy rich substances that are formed from the remains of animals
  14. 26. a renewable source of energy that uses the sun