energy sources

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Across
  1. 2. of electric current. (11)
  2. 3. ability to do work or provide power. (5)
  3. 6. wheel capturing power from air or water flow. (7)
  4. 8. of power from the sun. (5)
  5. 10. that can be naturally replenished. (9)
Down
  1. 1. generated by moving air. (4)
  2. 2. used for heating and electricity, often from natural deposits. (3)
  3. 3. capacity to do work or produce heat. (6
  4. 4. from inside the Earth used as a power source. (10)
  5. 5. material burned as fuel. (7)
  6. 7. black rock burned for fuel. (4)
  7. 9. fuel used in vehicles. (3)
  8. 11. released from splitting atoms. (7)