©Adam Crowley 2007

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Presentation transcript:

©Adam Crowley

©Adam Crowley 2007 A pulley uses grooved wheels and a rope to raise, lower, or move a load.

©Adam Crowley 2007 Flag Pole Mini Blinds Crane

©Adam Crowley 2007

A straight rod or board Turns on a point known as a fulcrum.

©Adam Crowley 2007 Door Hinge See-Saw Wheel Barrow Pull Tabs

©Adam Crowley 2007

A wedge is an object with at least one slanting side It is an inclined plane that moves It ends in a sharp edge Cuts or splits material apart

©Adam Crowley 2007 Knife Scissors Axe

©Adam Crowley 2007

An inclined plane is a slanting surface Inclined means slanted – like a ramp It connects a lower level to a higher level

©Adam Crowley 2007 Ramps Stairs

©Adam Crowley 2007

A wheel with a rod – called an axle Lifts or moves loads Some “wheels” of a wheel and axle don’t look like wheels Doorknob or faucet handle

©Adam Crowley 2007 Dump Trucks Door Knob Wagon Faucet

©Adam Crowley 2007

An inclined plane wrapped around a shaft or cylinder.

©Adam Crowley 2007 Bolts and Screws Spiral Staircase

©Adam Crowley 2007

1.An axe is an example of a: a. Pulleyb. Wedgec. Wheel and Axle 2.You would use a pulley to: a.Cut food b. Hold pieces of wood togetherc. Help raise a flag 3.What is the name of a simple machine with a slanting surface? 4.The fixed point around which a lever turns is called a: a. screwb. fulcrumc. door knob 5.A pull tab on a soda can is an example of a: a. inclined planeb. screwc. lever

©Adam Crowley 2007 Edheads:http - Unitedstreaming - Findsounds - CA Dept. of Education: Mikids - Inventor’s Toolbox - The Franklin Institute - Gettyimages - sbmupa&pk=4&source=front&lightboxView=1&txtSearch=gears&selIma geType=7&chkLicensed=on&chkRoyaltyFree=on&chkNLM=on

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