Tidal Energy

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Across
  1. 4. tidal energy uses what gravitational forces?
  2. 5. what is the huge dam called?
  3. 7. first stage of converting water into electricity
  4. 11. is the conversion into electrical power easy or hard?
  5. 13. what does the flow of tides do to the air through a pipe?
  6. 14. is the energy supply reliable or not?
  7. 15. what type of energy does it make?
  8. 17. caused by?
Down
  1. 1. large rotating generators
  2. 2. where does the water flow through when the tide goes in and out?
  3. 3. what water levels are involved in the second stage of the conversion?
  4. 6. what does the water usually carry out to sea?
  5. 7. what converts the energy of tides into useful forms of power?
  6. 8. which is more predictable wind energy, tides, or solar power?
  7. 9. what allows the ships to pass?
  8. 10. what is the main form of power?
  9. 12. energy that tells the difference between high and low tide
  10. 16. what can the flow of tides do to a turbine?