ENERGY SOURCES

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Across
  1. 3. Energy derived from flowing water
  2. 6. The main benefit of using renewable energy sources is that they reduce _.
  3. 9. Renewable energy from moving air
  4. 11. _ fuels are mixtures of hydrocarbons that formed over millions of years from the remains of dead organisms.
  5. 12. Solar panels convert sunlight into __.
  6. 14. Energy harnessed from the heat of the Earth
Down
  1. 1. __ energy is generated by the wind turning turbines.
  2. 2. Energy from the sun
  3. 4. The practice of improving energy use
  4. 5. Organic materials used as fuel
  5. 7. _ energy is a nonrenewable that does not release air pollution or cause global warming.
  6. 8. Process of turning waste into reusable material
  7. 10. Using energy-efficient appliances can __ energy consumption.
  8. 13. A nonrenewable energy source used as a fuel for generating electricity
  9. 15. Energy derived from the ocean