hydroelectric dams

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Across
  1. 5. to harness flowing water into energy
  2. 8. the slope of the dam
  3. 9. blocks water
  4. 10. unit that moves water from the natural body to the turbine
  5. 11. a source of water that is blocked by a dam
  6. 14. creates electricity
  7. 15. does not hurt the environment
  8. 17. a stream of flowing water
  9. 19. a place where electricity is made
  10. 20. water stored in the lower half of the dam
Down
  1. 1. a gate for regulating water flow
  2. 2. another word for water
  3. 3. the sound under water to help monitor fish movement
  4. 4. water stored in the upper half of the dam
  5. 6. makes up 71% of the earth
  6. 7. the ability to work
  7. 10. unit that moves water from the natural body to the turbine
  8. 12. water that flows over land as surface water rather than being absorbed into groundwater or evaporating
  9. 13. structure for conveying water, includes: canals, tunnels, or pipelines
  10. 16. energy that does not run out
  11. 18. large rocks that reduces waves in the water