Ch. 18 Crossword Puzzle

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Across
  1. 3. Wood or dung that is burned for heat or electricity.
  2. 5. Abbreviation for Compact Fluorescent Bulb
  3. 6. The fastest-growing source of energy in the world.
  4. 9. Abbreviation for Light-Emitting Diodes.
  5. 10. The ultimate source of all renewable energy.
  6. 11. Also known as a solar or PV cell.
  7. 13. Gas that results from bacterial decomposition.
  8. 15. Electricity is generated by the energy of moving water.
  9. 17. Any appliance that “sucks” watts out of your outlets even when not in use.
  10. 21. Molecules that contain both carbon and hydrogen.
  11. 22. The rating given to appliances if they perform the same task using less electricity. (2
  12. 23. A windmill generates electricity.
  13. 24. Energy from sources that are constantly being formed.
Down
  1. 1. The heat from within the Earth is used to generate electricity.
  2. 2. The energy source of the sun.
  3. 4. Light bulbs that have been around for more than 100 years and are 90-95% inefficient.
  4. 7. The main process of generating energy at a nuclear power plant.
  5. 8. The engines of the future use hydrogen gas as their fuel. (2 words-no space)
  6. 12. _________ solar heating can be used to heat the water in your house.
  7. 14. Underwater power plants look a lot like wind farms.
  8. 15. A car with a gasoline engine and an electric motor.
  9. 16. space)
  10. 18. _____ solar heating keeps a greenhouse warm.
  11. 19. Energy sources that are still in development.
  12. 20. A mix of gas and ethanol is known as this, typically written as E10 or E85 at the pump.