8D Planet Earth

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Across
  1. 1. multiple components that serve one specific function within a larger machine
  2. 3. the scientific unit of energy
  3. 5. the pivot point of a lever
  4. 6. the class of lever with the effort in the middle
  5. 10. a push or pull that causes an object to change direction, speed, or shape
  6. 13. a machine component that uses liquids under pressure in enclosed spaces
  7. 15. an axehead is an example of this simple machine
  8. 16. what a machine is used for; what it does
  9. 17. the scientific unit of force
  10. 19. it controls the power applied to other moving parts of a machine
  11. 21. the percent of input energy that is used by a machine to do output work
  12. 22. improving a mechanical system through repetitve designing and testing
  13. 23. a block and tackle is a type of this
  14. 24. the force that an object experiences due to gravity
  15. 26. the gear that receives force from a driving gear
  16. 27. an input force applied to an object or machine
  17. 28. a simple machine made of rotating parts with different diameters (3 words)
Down
  1. 2. it can be thought of as the MA of a machine with perfect (100%) efficiency
  2. 4. the object that work is being done to by a machine
  3. 7. another term for a ramp (2 words)
  4. 8. the class of lever with the fulcrum in the middle
  5. 9. man-made streams created by the Romans for transporting water
  6. 10. the most common cause of energy loss in machines
  7. 11. a simple machine that turns rotational motion into linear motion
  8. 12. describes machines that use compressed air
  9. 14. engines that use chemical fuels for input energy
  10. 18. the ability to do work; "the currency of change"
  11. 20. a change in force produced by a machine (2 words)
  12. 24. the use of energy to when a force is applied over a certain distance
  13. 25. it transfers force between different parts of machine (e.g. chain)