how does a nuclear power reactor work ?

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Across
  1. 7. : tube or channel for conveying substances
  2. 9. : lift or move to a higher position
  3. 11. : structure around a nuclear reactor to prevent radiation escape
  4. 12. : machine producing alternating current for electrical systems
  5. 13. : total amount before losses
  6. 15. : machine converting fluid energy into mechanical energy
  7. 17. : visible vapor from burning material
  8. 19. : vertical structure carrying smoke from a fire
  9. 20. : cause someone or something to move by force
  10. 21. : between cold and hot
  11. 23. : function or work in a proper way
  12. 24. : join two pieces of equipment to work together
  13. 26. : device using atomic energy to produce heat
  14. 29. : essential part of something
  15. 30. : machine converting mechanical energy to electrical energy
  16. 33. : amount of force per unit area
  17. 34. : add contents to make a container full
  18. 35. : small, rounded, compressed mass of a substance
  19. 38. : thin straight piece of material
  20. 40. : amount of something that is used
  21. 42. : change something into another form or state
  22. 43. : excess material or garbage not needed
Down
  1. 1. : soft black carbon used in pencils and lubricants
  2. 2. : device that cools gases into liquids
  3. 3. : substance used to reduce or regulate heat
  4. 4. : factory or place where power is produced
  5. 5. : reversing direction periodically
  6. 6. : system for delivering electricity across regions
  7. 8. : process of burning something
  8. 10. : produce energy or power
  9. 14. : function correctly or as intended
  10. 16. : device that causes circulation
  11. 18. : substance slowing neutrons in nuclear reactors
  12. 22. : decrease in quantity or quality
  13. 25. : device changing voltage in electrical circuits
  14. 27. : pressurized vapor used for energy
  15. 28. : container for holding liquids or substances
  16. 31. : related to heat
  17. 32. : heat a liquid until it turns into vapor
  18. 36. : complete path for an electric current
  19. 37. : replace something with another
  20. 39. : large amount of something
  21. 41. : amount remaining after losses