Sources of Energy

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Across
  1. 5. source of energy that will never run out
  2. 6. is the heat from the within of the earth
  3. 8. produces electricity in power stations
  4. 11. when the water rushes down from dam, it has ... energy
  5. 12. solar panel converts light energy to ...
  6. 13. use this instead of AC
  7. 15. one source of energy that is not renewable
  8. 16. the main source of energy
  9. 18. one of the sources of biofuels
  10. 21. fossil fuels are
Down
  1. 1. a calculator can be powered by a ...
  2. 2. we should ... energy
  3. 3. has kinetic energy when spinning
  4. 4. a shoot of hot water and steam on the earth surface
  5. 7. from the sun that keeps us warm
  6. 9. biofuels can be ... and will not run out
  7. 10. ride this instead of motorbike to reduce the use of fossil fuels
  8. 14. have blades that help to grind grains
  9. 17. a large open area where there are a lot of wind turbines
  10. 19. nuclear energy comes from this
  11. 20. built across a river to produce electricity