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THIS. IS. Jeopardy. Jeopardy. CRCT Review. Efficient Machines. Simple Solutions. Work. Machines. Levers. 100. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 400. 500. 500. 500. 500. 500. 500.

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  1. THIS IS Jeopardy

  2. Jeopardy CRCT Review Efficient Machines Simple Solutions Work Machines Levers 100 100 100 100 100 100 200 200 200 200 200 200 300 300 300 300 300 300 400 400 400 400 400 400 500 500 500 500 500 500

  3. What must occur every time for work to be exerted? A 100

  4. A force must be applied • An object must move in the same direction as the force A 100

  5. What unit is used to measure force? • What unit is used to measure work? A 200

  6. Newtons (N) • Joules (J) A 200

  7. What is the formula for work? A 300

  8. Work = force x distance (W = f x d) A 300

  9. If you lift your science book up off the floor, are you doing work? Why/why not? A 400

  10. Yes, because you are lifting your books upward, and the books are moving upward also. A 400

  11. You pick your cell phone up off the counter and talk into it as you walk across the room. When you finish talking, you place it back on the counter and slide it away from the edge. When are you doing work on the cell phone? A 500

  12. Picking up the cell phone • Placing it down on the counter • Pushing it away from the edge A 500

  13. You exert 20 N to push a desk 10 m. B 100

  14. 200 J B 100

  15. You move a wheelbarrow 50 m by exerting 100 N. B 200

  16. 5,000 J B 200

  17. What is the MA of a machine that has an output of 250 J if you have an input of 10 J. B 300

  18. 25 B 300

  19. You push a car 0 m with 200 N B 400

  20. No work is being done because the car didn’t move B 400

  21. You carry your cat 50 m with 100 N B 500

  22. No work is being done, you are holding the cat up and moving it forward B 500

  23. What is a term that means the same thing as input force? C 100

  24. Effort C 100

  25. OL-What is the ideal mechanical efficiency of a machine? AD- How do you calculate the mechanical efficiency of a machine? C 200

  26. OL- 100% AD- output force input force x 100% C 200

  27. How do you find the MA of a machine? C 300

  28. Output force Input force C 300

  29. What are the 3 ways a machine can help you do work? C 400

  30. Multiply distance • Multiply force • Change direction C 400

  31. What is the MA of a machine that multiplies force? C 500

  32. Greater than 1

  33. An inclined plane that moves is called? D 100

  34. A wedge D 100

  35. An inclined plane wrapped around a cylinder is called? D 200

  36. A screw D 200

  37. A machine that uses 2 or more simple machines is called? D 300

  38. A compound (or complex) machine D 300

  39. Which type of simple machines best represent these parts of your body? • Muscles and bones • Teeth D 400

  40. Levers • Wedges D 400

  41. Why would you increase the length and thinness of a wedge? D 500

  42. To create a greater MA D 500

  43. The fixed point a lever pivots around is called? E 100

  44. The fulcrum E 100

  45. The weight the lever lifts is called? E 200

  46. The resistance E 200

  47. What is always located in the middle of a 2nd class levers? E 300

  48. The resistance E 300

  49. What class of lever does a bottle opener belong to? E 400

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