SIMPLE MACHINESRevierw
A machine is a device that
makes physical tasks easier.
Wedge
Inclined Plane
Screw
Wheel and Axle
Lever
Pulley
Simple machines are machines with few or no moving parts.
There are six simple machines, they are:
1. Lever2. Inclined Plane3. Wedge4. Screw5. Wheel and Axle6. Pulley
Wedge
Inclined Plane
Screw
Wheel and Axle
Lever
Pulley
What is a…Simple Machine
What is a Lever? A hammer is a lever that helps do
work. Work is done whenever force
makes an object move.
What is a Lever? A hammer is a lever that helps do
work. Work is done whenever force
makes an object move. Other examples include a seesaw,
crowbar, baseball bat and rake
Fulcrum
Lever
Load
What is an Inclined Plane?
A ramp is an inclined plane. A ramp helps move objects. You can use an inclined plane to
help move an object to a higher or lower place.
What is a Screw? A screw is a simple machine used
to hold objects together. A screw has a thread and is
another example of an inclined plane, it is a curved ramp.
A screw is an inclined plane wrapped around a post. It’s a curved ramp.
What is a Wedge? A doorstop is a wedge. A wedge is a simple machine used
to push objects apart. An ax is a wedge that splits wood.
Two inclined planes make a wedge.
What is a Pulley? Made of rope and string wound
around a reel to change the direction of a force.
You can use a pulley to move a load up, down or sideways.
WheelRope This box is easier
to lift because of the pulley.
What is a… Wheel and Axle?
A wheel that turns on a rod to help move things quickly and easily.
The axle, or rod, turns when you put force on the wheel.
You probably have seen a wheel and axle on scooters, cars,
The screw driver is an example of a wheel and axle, where the screw or bolt is the axle and the handle is the wheel. The tool makes the job easier by changing the amount of the force you exert.
AxleWheel
Compound Machine • Is 2 or more machines working
together• Examples include a Bike or a Car
Machines are Important!
Simple and Compound machines are so important because without them we can’t have…
COMPUTERS, TELEVISION, Mobile PHONES, TELEPHONES, and Even FOOD (especially).
Just imagine what life would be like!
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