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• A pulley helps a person lift things up such as

cars.

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).

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.

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.

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.

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.

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.

Bibliography

Pictures are from www.google.com Information are from www.edheads.org/, and

www.wikipedia.org