simple machines in the real world.. machine- something that makes work seem easier by changing the...
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Simple machines in the real world.
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• Machine- something that makes work seem easier by changing the size or direction of a force.
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• Work – using a force to move an object a certain distance.
Who is doing more work?
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Machines are: Tools we use to make work easier.
Levers Screws Wedge
Pulley Inclined Plane
Wheel and Axle
Types of machines:
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Let’s Review First!!! Pulley A grooved wheel with a rope running
through the groove
Wheel and Axle A wheel with a rod or axle through center
Lever A rod or board that pivots at one end
Screw An inclined plane wrapped around a cylinder
Wedge Has a slanting side ending in a sharp edge
Inclined Plane A slanting surface
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But can you recognize simple machines in the real world?
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Lever
Wedge
Wheel & Axle
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Wheel and AxlePulley
Screw
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Screw
Lever
Pulley
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Lever
Inclined Plane
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Lever
Screw
Wheel & Axle
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Wheel & Axle
Screw
Lever
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Wedges
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Lever
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Inclined Planes
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Levers
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Now it’s your turn! Can you name all six simple machines from memory?
•Wheel & Axle
•Pulley
•Lever
•Screw
•Inclined Plane
•Wedge
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What simple machines can be found in this compound
machine?
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Assignment…
Go to www.edheads.org
From the Tab Choose an Activity… Click Simple Machines
Complete one Activity from The House and one activity from The Tool Shed, as well as one more of your choosing. Print your results.