Energy Sources Crossword Puzzle

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Across
  1. 2. Converts sunlight directly into electricity
  2. 7. Energy sources that can be naturally replaced
  3. 9. Machine that converts energy from wind or water into electricity
  4. 10. Heat energy from inside the Earth
  5. 11. Coal, oil, or natural gas formed from ancient plants and animals
  6. 14. Device that produces electricity
  7. 15. Organic material used for fuel
Down
  1. 1. Energy sources that cannot be easily replaced
  2. 3. Energy from flowing water
  3. 4. The total amount of greenhouse gases produced by human activities
  4. 5. Flow of electrical power or charge
  5. 6. Energy from splitting atoms
  6. 8. The process of burning fuel to release energy
  7. 12. Energy from the sun
  8. 13. Air movement used to generate power