Irish Physical Science C. 13

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Across
  1. 3. equal to force x distance
  2. 4. force that a machine does on an object
  3. 5. kind of potential energy in a stretched rubber band or compressed spring
  4. 7. energy at the level of the atom
  5. 9. equal to work output divided by work input
  6. 13. simple machine where MA is determined by counting ropes
  7. 14. rate of doing work
  8. 16. kinetic energy depends on mass and ________
  9. 17. force that you do on a machine
  10. 18. ability to do work
  11. 19. class of lever that is input fulcrum output
  12. 20. branch of science that deals with movement of heat and other energy between types
  13. 22. type of energy that is the sum of potential and kinetic
  14. 24. unit of power
  15. 31. law that says energy cannot be created or destroyed
  16. 33. energy of motion
  17. 34. ramp
  18. 35. pivot of a lever
  19. 37. energy of position
  20. 38. machines multiply force or distance or change ______
  21. 39. some power plants use nuclear _______
Down
  1. 1. how many times a machine multiplies work
  2. 2. kind of potential energy in a rock on a cliff
  3. 6. ax blade is an example
  4. 8. machine with a rigid arm pivoting on a fulcrum
  5. 10. unit of work and energy
  6. 11. type of energy waves that can travel through empty space
  7. 12. Sun’s energy comes from nuclear ________
  8. 13. type of motion machine that is impossible due to friction
  9. 15. energy stored in bonds of molecules
  10. 21. combination of pulleys
  11. 23. machine consisting of more than 1 simple machine
  12. 25. class of lever that is fulcrum input output
  13. 26. device that makes work easier
  14. 27. means energy going from one type to another
  15. 28. class of lever that is input output fulcrum
  16. 29. lever connected to a shaft
  17. 30. means a basic machine
  18. 32. inclined plane wrapped around a cylinder
  19. 36. gravitational potential depends on mass, acceleration due to gravity and ______