ES: Chapter 14 version 2

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Across
  1. 3. process of passing electricity through water to produce hydrogen gas
  2. 5. program that recognizes buildings and appliances that use reduced amounts of energy
  3. 10. fuel that is 20% recycled vegetable oil
  4. 13. greenhouse gas that is actually more dangerous than CO2
  5. 15. term used to refer to any energy that comes from the sun
  6. 16. type of use where a resource is used for personal use
  7. 19. device that uses indirect solar energy in the form of air currents
  8. 20. structure built across the mouth of a bay to generate electicity
  9. 21. major elemental component of photovoltaic cells
  10. 22. energy derived from present-day photosynthesis
Down
  1. 1. the process of changing one form of energy to another form
  2. 2. process by which starches or sugar are converted to ethanol
  3. 4. type of energy also known as heat energy that has the largest wavelength
  4. 6. device that rotates to create electrical energy
  5. 7. description of the process of moving air or water using natural convection currents
  6. 8. a fuel that is a combination of gasoline and ethanol
  7. 9. type of cell that collects radiant energy
  8. 11. using water to provide energy
  9. 12. type of energy provided by temperatures in the earth
  10. 14. chemical reaction on the sun that produces energy
  11. 17. type of stove that uses scrap wood that would normally be discarded
  12. 18. general term for a device that absorbs solar energy