simple machines fifth grade science. simple machine- is a tool that makes work easier and has few or...
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Simple MachinesSimple Machines
Fifth Grade ScienceFifth Grade Science
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SIMPLE MACHINE- is a SIMPLE MACHINE- is a tool that makes work tool that makes work
easier and has few or no easier and has few or no moving partsmoving parts
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Types of Simple Types of Simple Machines:Machines:
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PulleysPulleys
►A A pulleypulley- uses grooved wheels and a - uses grooved wheels and a rope to raise, lower, and move a loadrope to raise, lower, and move a load For example: window blinds, craneFor example: window blinds, crane
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pulley
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Lever- a stiff bar that Lever- a stiff bar that rests on a middle rests on a middle
supportsupport
Can you think of an example of a lever?
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See Saw
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Wedge- has at least one slanted side that ends in a sharp edge
An axe blade is a wedge that cuts material apart.
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Wheel
Axle
A wheel with a rod through its center lifts or moves loads
Wheel and Axle
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Inclined Plane- a slanted surfaceInclined Plane- a slanted surface
It is much easier to move an object up an inclined plane than straight up
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Screw- an inclined plane that is wrapped around a pole
Screws hold things together and can be used to lift materials.
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Can you think of any simple Can you think of any simple machines that you see machines that you see
everyday?everyday?►Wheels on backpacks and suitcasesWheels on backpacks and suitcases
►Ramps into truck bedsRamps into truck beds
►Screws in desk legsScrews in desk legs
How are each of these simple machines?
What problems are they solving?