Simple Machines Fifth Grade Science. SIMPLE MACHINE- is a tool that makes work easier and has few or...
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Transcript of Simple Machines Fifth Grade Science. SIMPLE MACHINE- is a tool that makes work easier and has few or...
Simple MachinesSimple Machines
Fifth Grade ScienceFifth Grade Science
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
Types of Simple Types of Simple Machines:Machines:
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
pulley
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?
See Saw
Wedge- has at least one slanted side that ends in a sharp edge
An axe blade is a wedge that cuts material apart.
Wheel
Axle
A wheel with a rod through its center lifts or moves loads
Wheel and Axle
Inclined Plane- a slanted surfaceInclined Plane- a slanted surface
It is much easier to move an object up an inclined plane than straight up
Screw- an inclined plane that is wrapped around a pole
Screws hold things together and can be used to lift materials.
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?