2. © Mark E. Damon - All Rights Reserved

3. Vocabulary Types of Simple Machines Using Simple Machines How Simple Machines Work Simple Machines Hodge- Podge $100 $200 $300 $400 $500

4. © Mark E. Damon - All Rights Reserved $100 A device that makes work easier by changing the size or direction of force is called what?

5. © Mark E. Damon - All Rights Reserved $100 simple machine Scores

6. © Mark E. Damon - All Rights Reserved $200 What is the name of the fixed point on a lever?

7. © Mark E. Damon - All Rights Reserved $200 fulcrum Scores

8. © Mark E. Damon - All Rights Reserved $300 The use of force to move an object over a distance is known as…

9. © Mark E. Damon - All Rights Reserved $300 work Scores

10. © Mark E. Damon - All Rights Reserved $400 How quickly work is done is called….

11. © Mark E. Damon - All Rights Reserved $400 power Scores

12. © Mark E. Damon - All Rights Reserved $500 What is the number of times the machine multiples force?

13. © Mark E. Damon - All Rights Reserved $500 Mechanical Advantage Scores

14. © Mark E. Damon - All Rights Reserved $100 The unit used to express power is what?

15. © Mark E. Damon - All Rights Reserved $100 a watt Scores

16. © Mark E. Damon - All Rights Reserved $200 How can you calculate the mechanical advantage of a pulley?

17. © Mark E. Damon - All Rights Reserved $200 Count the number of ropes other than the effort rope. Scores

18. © Mark E. Damon - All Rights Reserved $300 What compares a machine’s work output with its work input?

19. © Mark E. Damon - All Rights Reserved $300 Mechanical efficiency Scores

20. © Mark E. Damon - All Rights Reserved

21. $400 A simple machine made of a post with an inclined plane around it (a) wheel-and-axle (b) screw (c) pulley (d) wedge A simple machine made of a post with an inclined plane around it (a) wheel-and-axle (b) screw (c) pulley (d) wedge

22. © Mark E. Damon - All Rights Reserved $400 (b) screw Scores

23. © Mark E. Damon - All Rights Reserved $500 You want to lift a box that weights 60 N. If the mechanical advantage of your lever is 3, how much force will you need to apply to do the job?

24. © Mark E. Damon - All Rights Reserved $500 Fload Fappl 20 N Fload Fappl 20 N Scores

25. © Mark E. Damon - All Rights Reserved $100 What type of lever is this:

26. © Mark E. Damon - All Rights Reserved $100 2 nd class lever Scores

27. © Mark E. Damon - All Rights Reserved $200 What is the mechanical advantage of this wheel and axle? What is the mechanical advantage of this wheel and axle? 20 40

28. © Mark E. Damon - All Rights Reserved $200 2 2 Scores

29. © Mark E. Damon - All Rights Reserved $300 Which two simple machines make up a pair of scissors?

30. © Mark E. Damon - All Rights Reserved $300 A lever and a wedge Scores

31. © Mark E. Damon - All Rights Reserved $400 How is the screwdriver being used in this picture? (a) as a lever (b) as a screw (c) as a pulley (d) as a wheel-and-axle How is the screwdriver being used in this picture? (a) as a lever (b) as a screw (c) as a pulley (d) as a wheel-and-axle

32. © Mark E. Damon - All Rights Reserved $400 (a) as a lever Scores

33. © Mark E. Damon - All Rights Reserved $500 Norman pushes a lever down 5 meters with a force of 50 N. A box with a weight of 30 N at the other end goes up 100 cm. What is the efficiency of the machine?

34. © Mark E. Damon - All Rights Reserved $500 Scores 12%

35. © Mark E. Damon - All Rights Reserved $100 What does a fixed pulley change?

36. © Mark E. Damon - All Rights Reserved $100 The direction of the force Scores

37. © Mark E. Damon - All Rights Reserved $200 Which class of lever changes the direction of the force applied? Which class of lever changes the direction of the force applied?

38. © Mark E. Damon - All Rights Reserved $200 1 st class lever Scores

39. © Mark E. Damon - All Rights Reserved $300 Work output should always equal work input with an ideal machine. However, in the real world this does not happen. Why not?

40. © Mark E. Damon - All Rights Reserved $300 Friction between the machine’s part causes some work to be converted. Scores

41. © Mark E. Damon - All Rights Reserved $400 When a machine increases the distance over which a force is exerted, what happens to the size of the force exerted?

42. © Mark E. Damon - All Rights Reserved $400 Scores The size of the force must decrease.

43. © Mark E. Damon - All Rights Reserved $500 You are moving a heavy box into the back of a truck. Would you rather use a steep ramp, a less-steep ramp, or a ladder? Explain your choice.. You are moving a heavy box into the back of a truck. Would you rather use a steep ramp, a less-steep ramp, or a ladder? Explain your choice..

44. © Mark E. Damon - All Rights Reserved $500 Scores I would rather use a less-steep ramp. Using a less-steep ramp to move the heavy box would require less effort (force), but you would move the box a greater distance. If I used a steep ramp, I would have to use more effort because I would be moving the box a shorter distance forward. If I used a ladder, I wouldn’t be going any distance forward, and I would have to carry the load straight up, which would be very hard.

45. © Mark E. Damon - All Rights Reserved $100 Scientists have a special meaning for work. Which one of these is an example of scientific work? (a) pushing on a door that won’t open (b) lifting a box off the floor (c) standing still with a backpack strapped to your back (d) reading a textbook Scientists have a special meaning for work. Which one of these is an example of scientific work? (a) pushing on a door that won’t open (b) lifting a box off the floor (c) standing still with a backpack strapped to your back (d) reading a textbook

46. © Mark E. Damon - All Rights Reserved $100 (b) lifting a box off the floor Scores

47. © Mark E. Damon - All Rights Reserved $200 Look at the labeled parts of the diagram. Which part shows a fulcrum? (a) Part A (b) Part B (c) Part C (d) Part D Look at the labeled parts of the diagram. Which part shows a fulcrum? (a) Part A (b) Part B (c) Part C (d) Part D

48. © Mark E. Damon - All Rights Reserved $200 (d) Part D Scores

49. © Mark E. Damon - All Rights Reserved $300 How could you increase the mechanical advantage of a first class lever?

50. © Mark E. Damon - All Rights Reserved $300 Scores Move the fulcrum closer to the load.

51. © Mark E. Damon - All Rights Reserved $400 Which simple machine is shown in the diagram? (Be specific)

52. © Mark E. Damon - All Rights Reserved $400 Third class lever Scores

53. © Mark E. Damon - All Rights Reserved $500 Which machine always has a mechanical advantage of less than 1?

54. © Mark E. Damon - All Rights Reserved $500 Scores Third-class lever