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Flashcards in Simple Machines Deck (82):
1

What are the six simple machine?

1. Lever
2. Inclined plane
3. Wedge
4. Wheel and axle
5. Screw
6. Pulley

2

What is a lever?

A stiff bar that moves about a fixed point (fulcrum).

3

What is a stiff bar that moves about a fixed point (fulcrum)?

Lever

4

What are some examples of a lever?

1. Seesaw
2. Shovel
3. Crowbar
4. Nutcracker

5

What is a wedge?

Wide at one end and pointed at the other.

6

What is the simple machine that is wide at one end and pointed at the other?

A wedge

7

What are some examples of wedges?

1. knife
2. ax

8

Simple machines are tools that make work ______.

easier

9

What are 5 ways simple machines make life easier?

1. Lift a heavy object
2. Move a heavy object
3. Push things apart
4. Hold an object together
5. Change the direction of a force (we use the help of gravity to help us pull down in order to make an object move up).

10

What is an inclined plane?

A flat surface that is raised so one end is higher than the other.

11

What is the simple machine where a flat surface that is raised so one end is higher than the other?

Inclined Plane

12

What is an example of an inclined plane?

Ramp

13

What is a wheel and axle?

A rod attached to a wheel.

14

What is the simple machine that is a rod attached to a wheel?

wheel and axle

15

What are some examples of a wheel and axle?

1. Bicycle
2. Wheels
3. Roller skates
4. Door knob

16

What is a pulley?

A wheel that has a rope wrapped around it.

17

What is the simple machine that is a wheel that has a rope wrapped around it?

Pulley

18

What is an example of a pulley?

Blinds, flag pole

19

What is a screw?

An inclined plane wrapped around a cylinder or cone.

20

What is the simple machine with an inclined plane wrapped around a cylinder or cone?

Screw

21

What are some examples of a screw?

1. Jar lid
2. Wood screw

22

What is a compound machine?

Where you have a combination of two or more simple machines.

23

What is it when you have a combination of two or more simple machines?

Compound Machine

24

What are examples of compound machines?

1. Scissors
2. Wheelbarrow
3. Bicycle
4. Can opener

25

Force

Any push or pull on an object

26

What is it called for any push or pull on an object?

Force

27

What is a change in position of an object?

Motion

28

Motion

A change in position of an object

29

What is how fast something moves over a distance?

Speed

30

Speed

How fast something moves over a distance

31

What is the force that pulls objects towards each other?

Gravity

32

Gravity

Force that pulls objects towards each other

33

What is the measure of the pull of gravity - all motion is caused by forces?

Weight

34

Weight

Measure of the pull of gravity - all motion is caused by forces

35

What is the measure of force that it takes to move an object a certain distance?

Work

36

Work

Measure of force that it takes to move an object a certain distance

37

What is a tool that help people do work?

Simple Machine

38

Does a simple machine change the amount of work or just make it easier?

Just makes it easier

39

A simple machine does 3 things:
1.
2.
3.

1. Reduces amount of force or
2. Changes the direction of the force
3. Or does both

40

What is a bar that moves on or around a fixed point (fulcrum)? (It lifts or moves loads.)

Lever

41

Lever

A bar that moves on or around a fixed point (fulcrum). It lifts or moves loads.

42

What is a rope over a wheel? (It moves things up, down, or across.)

Pulley

43

Pulley

A rope over a wheel. It moves things up, down, or across.

44

What is a flat surface set at an angle? (Objects move up or down on it.)

Inclined Plane

45

Inclined Plane

A flat surface set at an angle. Objects move up or down on it.

46

What is two inclined planes stuck back to back. (It cuts or splits an object apart.)

Wedge

47

Wedge

Two inclined planes stuck back to back. It cuts or splits an object apart.

48

What is an inclined plane wrapped around a cylinder? (Used to hold things together or lifts.)

Screw

49

Screw

It has an inclined plane wrapped around a cylinder. Used to hold things together or lifts.

50

What is a wheel with a rod going through it's center. (Both parts work together to move or lift objects.)

Wheel and Axle

51

Wheel and Axle

A wheel with a rod going through it's center. Both parts work together to move or lift objects.

52

A scissor is a compound machine made of two ___________ and two _____________.

levers; wedges

53

___________ slows an object down and creates heat.

Friction

54

When an object moves through distance, this is called __________.

work

55

Whenever work is done, a person uses _______.

energy

56

A bike is a ____________ machine.

compound

57

These two parts act as one simple machine. They roll and are found on cars, bikes, and wheelbarrows.

Wheel and axle

58

A rope, a 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

59

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

60

These simple machines are wheels with teeth on them that fit together when the simple machines are turned. These simple machines are used to increase or decrease turning power by changing their size.

Gear

61

This simple machine can be used to split things apart or hold a door open.

Wedge

62

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

Screw

63

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

64

Simple machines are tools that makes work easier. They do 2 things:

1. They have few or no moving parts
2. They require a force to make them work

65

What is the push or pull required to make a simple machine work?

Force

66

___________ is done when an object is moved over a distance.

Work

67

What is the visible shape and configuration?

Form (for example a saw has a long sharp blade, wood handle)

68

What is the purpose of an object (what is it used for)?

Function (for example a saw is used to cut things)

69

What is an inclined planes form?

A flat surface that is tilted or sloped.

70

What is the function of an inclined plane?

An object can be moved up or down more easily. Less force is needed to over the object.

71

What is the form of a wedge?

Two inclined planes back to back. Wide at one end, pointed at the other.

72

What is the function of a wedge?

To separate things by splitting, cutting, or piercing.

73

What is the form of a screw?

An inclined plane wrapped around a shaft or pole.

74

What is the function of a screw?

To hold things together or to lift materials.

75

What is the form of a wheel and axle?

A rod (long cylinder) that is fixed inside a wheel.

76

What is the function of a wheel and axle!?

To make work easier by moving objects over a greater distance with less force needed.

77

What is the form of a lever?

A stiff bar that moves about a fixed point (fulcrum).

78

What is the function of a lever?

Makes work easier by pushing, pulling, or lifting loads (objects) by amplifying the motion (like a seesaw).

79

What is the form of a pulley?

A wheel with a rope wrapped around it.

80

What is the function of a pulley?

Makes it easier to move objects up and down, across long distances by decreasing the amount of force needed. (Like a flagpole)

81

What is the form of a compound machine?

It is made up of 2 or more simple machines that work together (like a bicycle or scissors).

82

What is the function of a compound machine?

Simple machines work together to reduce the force or change direction of the force to make work easier.