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Examples:

Inclined planes make the work of moving things easier. You would need less energy and force to move objects with an inclined plane. The longer the slope of the inclined

plane the easier it is to pull or push the heavy object up or down the inclined plane.

An inclined plane is a flat surface that is higher on one end. You can use this machine to move an object to a lower or higher place.

Ramp Slanted Road Path up a Hill Slide

An object that a lever moves is called the load. The closer the object is to the fulcrum, the easier it is to move.

Examples:

A lever is a board or bar that rests on a turning point. This turning point is called the fulcrum.

There are many different kinds of levers. One of them is like a see-saw. There is a load on one end, and when the person pushes one end down the load on the other side will move.

•A hammer is a lever when it is used to pull a nail out of a piece of wood.

•Bottle openers•Crow bars •Seesaw

Crow bar

Hammer

A wedge is made up of two inclined planes. These planes meet and form a sharp edge. This edge can split things apart.

Examples:

A wedge is a simple machine used to push two objects apart.

•Knives•Axes

•Door stopper•Nails

A screw is a simple machine that is made from another simple machine. It is actually an inclined plane that winds around itself.

Examples:

Some screws are used to lower and raise things. They are also used to hold objects together.

•Jar Lids

•Light Bulbs•Stools

•Clamps •Wrenches•Key Rings

•Spiral Staircase

A screw has ridges and is not smooth like a nail.

Pulleys let you move loads up, down, or sideways. Pulleys are good for moving objects to hard to reach places. It also makes the work of moving heavy loads a lot easier.

Examples:

This simple machine is made up of a wheel and a rope. The rope fits on the groove of the wheel. One part of the rope is attached to the load.When you pull on one side of the pulley, the wheel

turns and the load will move.

•Flag Poles

•Clothes Lines •Sailboat•Window Blinds

•Crane

The wheel and axle is another simple machine. The axle is a rod that goes through the wheel. This lets the wheel turn. It is easy to move things from place to place with wheels and axles.

Examples:

•Cars•Roller Skates•Wagons & Wheelbarrows

•Door Knobs

•Gears in Watches, Clocks, and Bicycles

1. Simple machines make work easier. 1. Simple machines make work easier.

A. True A. True

B. False B. False

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2. A fork is an example of a: 2. A fork is an example of a:

A. pulley.A. pulley.

B. wedge.B. wedge.

C. wheel and axle.C. wheel and axle.

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A. a ball and chain. A. a ball and chain.

3. A pulley is made up of:3. A pulley is made up of:

B. a rope and wheel. B. a rope and wheel.

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4. A roller skate is an example of a: 4. A roller skate is an example of a:

A. wheel and axle A. wheel and axle

B. wedge B. wedge

C. lever C. lever

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5. This simple machine is made up of 5. This simple machine is made up of two inclined planes. two inclined planes.

A. screwA. screw

B. wedgeB. wedge

C. pulleyC. pulley

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6. The bottom of a light bulb would be 6. The bottom of a light bulb would be considered a:considered a:

A. wedge.A. wedge.

B. screw.B. screw.

C. lever.C. lever.

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7. The fulcrum is the turning point of a(n):7. The fulcrum is the turning point of a(n):

A. lever.A. lever.

B. pulley.B. pulley.

C. inclined plane.C. inclined plane.

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8. A ramp is an example of a(n):8. A ramp is an example of a(n):

A. pulley.A. pulley.

B. screw.B. screw.

C. inclined plane.C. inclined plane.

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9. A screw is both a(n):9. A screw is both a(n):

A. wedge and lever.A. wedge and lever.

B. lever and inclined plane.B. lever and inclined plane.

C. pulley and inclined plane. C. pulley and inclined plane.

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10. A seesaw on the playground is a(n):10. A seesaw on the playground is a(n):

A. lever.A. lever.

B. inclined plane.B. inclined plane.

C. pulley.C. pulley.

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11. A wheel and axle can be used to:11. A wheel and axle can be used to:

A. pull an object towards you.A. pull an object towards you.

B. help you travel around.B. help you travel around.

C. both (A) and (B).C. both (A) and (B).

D. neither (A) or (B).D. neither (A) or (B).

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12. You would use a pulley to:12. You would use a pulley to:

A. cut food.A. cut food.

C. help guide the sail on a sailboat.C. help guide the sail on a sailboat.

B. hold pieces of wood together.B. hold pieces of wood together.

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13. An object that a lever moves is called a:13. An object that a lever moves is called a:

A. weight.A. weight.

C. load.C. load.

B. force.B. force.

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14. The shorter the slope of the inclined 14. The shorter the slope of the inclined plane the easier it is to pull or push an plane the easier it is to pull or push an object up or down the inclined plane.object up or down the inclined plane.

A. TrueA. True

B. FalseB. False

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15. You would use a lever to:15. You would use a lever to:

A. pull a box up a ramp. A. pull a box up a ramp.

C. pull the flag up on the flagpole.C. pull the flag up on the flagpole.

B. pull a weed out of a garden.B. pull a weed out of a garden.

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Http://www.fi.edu/qa97/spotlight3/spotlight3.html

Http://www.coe.uh.edu/archive/science/science_lessons/scienceles1/finalhome.htm

Http://www.henry.k12.ga.us/cur/simp-mach/default.htm

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