simple machines
DESCRIPTION
Simple Machines. By Nathan. Contents. Pulley Wedge Lever Inclined Plane Wheel and Axle Gears Screw. Pulley. If there is ten wheels in a pulley it makes you ten times stronger There are lots of types of Pulleys - PowerPoint PPT PresentationTRANSCRIPT
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Simple Machines
By Nathan
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Contents
• Pulley• Wedge• Lever• Inclined Plane• Wheel and Axle• Gears• Screw
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Pulley
• If there is ten wheels in a pulley it makes you ten times stronger
• There are lots of types of Pulleys• A pulley helps a person lift things up such as
cars.
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Wedge
• A Wedge is a simple machine and it cuts things for you.
• There are lots of types of wedges, such as a shark tooth, a blade and a pin and lots more.
• You need to cut a lot of things such as food, wood and people(for surgery).
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Lever
• There are two types of levers, the crocodile and the seesaw lever.
• Here are some levers a cricket bat, a crowbar, scissors, a spade, a stick, a hammer and glasses.
• A Crocodile lever always needs to have a fulcrum and a seesaw lever always needs a pivot.
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Incline Plane
• Inclined planes are the same as ramps they help you to push things up or down such as blocks the Ancient Egyptians used for Pyramids.
• There are lots of types of inclined planes such as a bathtub, windows, tables and lots others.
• Sometimes incline planes are for doing competitions such as skateboarding stunts and motorcycling stunts.
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Wheel & Axle
• The Sumerians invented the wheel & axle and used them for conquering land and trading goods.
• The Romans then used the wheel & axle for chariot racing.
• Now our Wheel & and axles have tyres on them.
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Gears
• Gears always need to have cogs.• On Mountain bikes there are about 8 gears.• Gears always works a machine and is most of
the time made out of steel.
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Screw• A screw helps you put things together but you
will need a screwdriver to attach the screws.• Screws are used to hold glass, wood and
metal.• A screw is a cylinder with inclined planes
wrapped around it.
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Bibliography
Pictures are from www.google.com Information are from www.edheads.org/, and
www.wikipedia.org