Water Power

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Across
  1. 2. factory in which logs are sawed into lumber by a machine
  2. 4. water wheel in which water flows under the wheel
  3. 5. an artificial lake used to store water
  4. 9. a building in which grain is ground into flour
  5. 11. pitchback or breastshot (2 words)
  6. 13. an apparatus for bringing up objects or mud from a river
  7. 16. any resource that can be replenished naturally
  8. 17. a tank for generating steam in a steam engine
  9. 18. waste containing carbon
Down
  1. 1. energy from the sun
  2. 2. a sailing ship with two or more masts
  3. 3. supports an elevated water tank (2 words)
  4. 6. a ship powered by one or more steam engines
  5. 7. producing electricity by using the force of water
  6. 8. a unit of pressure (acronym)
  7. 10. timber sawn into rough planks
  8. 12. energy in the form of heat
  9. 13. a barrier constructed to hold back water
  10. 14. forces that act on a system, but do not belong to that system
  11. 15. a place where ships can seek shelter from storms