2. 1. Name the 6 different simple machines.

3. 1. Name the 6 different simple machines
1. Name the 6 different simple machines lever inclined plane screw wheel and axle wedge pulley

4. Classify each of the following types of simple machines.

5. 2
lever and wedge

6. 3
wedge

7. 4
screw

8. 5
lever and wedge

9. 6
inclined plane

10. 7
lever

11. 8
lever and wedge

12. 9
lever

13. 10
wedge

14. 11
lever

15. 12
lever

16. lever and wheel and axle13
lever and wheel and axle

17. 14
lever

18. 15
pulley

19. 16
lever

20. 17
wedge

21. 18
screw

22. 19
screw

23. 20
wedge

24. 21
lever

25. 22
screw

26. 23
wheel and axle

27. 24
lever and wedge

28. 25
wheel and axle

29. 26
screw

30. 27
wheel and axle

31. 28
wedge

32. 29
wheel and axle

33. 30
lever

34. 31
screw

35. 32
lever

36. 33
wheel and axle - gear

37. 34
lever

38. 35
wedge

39. 36
wheel and axle

40. 37
screw

41. 38
inclined plane

42. 39
lever and wedge

43. 40
inclined plane

44. 41
pulley

45. 42
wheel and axle

46. 43
wedge

47. 44
wheel and axle - gear

48. 45
lever

49. 46
This helps you move an object across the ground because they cut down on the amount of friction between what you're trying to move and the surface you're pulling it against.
wheel and axle

50. 47
Examples of this simple machine are used to hold things together. It is made up of an inclined plane wrapped around a cylinder.
screw

51. 48 wedge This simple machine can be used
to slip things apart or hold a door
open.
wedge

52. 49 gear This version of a simple machine is a wheel
with teeth on it that fit together when the simple
machine is turned. These simple machines are
used to increase or decrease turning power by
changing their size.
gear

53. 50
This simple machine can be used to lift a weight. It has a fulcrum, or pivot point, which can be located in the center, near the end or at the end of this simple machine.
lever

54. An inclined plane turned on its side which helps push things apart51
An inclined plane turned on its side which helps push things apart
wedge

55. 52
A heavy object could be rolled up this simple machine, instead of lifting it straight up. Using this simple machine can save effort, although the object must usually cover more distance if this simple machine is used.
inclined plane

56. 53
A rope, wheel with a groove in it and a weight make up this simple machine. You can pull down on the rope to lift the weight.
pulley

57. 54
The simplest of simple machines because to make it work, nothing moves.
inclined plane

58. 55
This makes work seem easier because it changes the direction of motion to work with gravity.
pulley

59. 56. Where is the fulcrum, resistance, and effort in this lever?

60. 57. What class of lever is a wheelbarrow?
second class

61. 58. Where is the fulcrum, resistance, and effort in this lever?

62. 59. What class of lever is a seesaw?
first class

63. 60. Where is the fulcrum, resistance, and effort in this lever?

64. 61. What class of lever is a nutcracker?
second class

65. 62. Where is the fulcrum, resistance, and effort in this lever?

66. 63. What class of lever is a door?
second class

67. 64. Where is the fulcrum, resistance, and effort in this lever?

68. 65. What class of lever is a broom?
third class

69. 66. Where is the fulcrum, resistance, and effort in this lever?

70. 67. What class of lever is a pair of scissors?
first class

71. 68. What is a push or pull called?
a force

72. 69. Is work done if a person holds 5 textbooks, but doesn’t move?no

73. 70. Is work done if a a dog picks up a stick and carries it to his dog house?
yes

74. 71. What is the unit for a force?
a newton

75. 72. What is a quantity that measures the effects of a force acting over a distance called?
work

76. 73. What is the unit for work?
joule

77. 74. What is a Newton·meter?
joule

78. 75. In the SI system, what is the approximate weight of an apple?
1 newton

79. 76. What is a quantity that measures the rate at which work is done called?
power

80. 77. What is the SI unit for power?
watt

81. 78. What is the English unit for power?
horsepower

82. 79. Name two ways you can multiply a force by using a simple machine.
Machines can change the diretion of an input
force or they can increase an output force by
changing the distance over which the force is
applied.

83. 80. What is the name of a quantity that measures how much a machine multiplies force or distance?
mechanical advantage

84. 81. What are the three members of the lever family?
lever, pulley, and wheel and axle

85. 82. What are the three members of the inclined plane family?
inclined plane, wedge, and screw

86. 83. What is the fulcrum of a lever?
the pivoting point of the lever

87. 84. What is a compound machine?
a machine consisting of
two or more simple
machines