Simple Machines

By Rachel & Simon

This is an inclined plane. The definition of an inclined plane is a sloping surface . It

makes the job shown here easier by reducing weight that the man has to push.

The part of the picture that is this simple machine is the ramp.

This is a lever. The definition of a lever is a straight board that pivots on its fulcrum.

The seesaw is the lever because the fulcrum is the middle part and the top part tilts up

and down. It helps by letting children have FUN!

This is a pulley. The definition of a pulley is that a pulley uses grooved wheels and a

rope to raise or lower a load and \or an object. In the picture the pulley is a metal ball

Chain that ,when pulled, goes over a small grooved wheel and pulls up something that

Somehow connects the circuit and causes the light bulb to turn on. The kinetic energy

is changed to electric energy when the circuit is completed and then it is changed to

Light. It helps to turn on the light.

This is a screw. The definition is a inclined plane wrapped around a cylinder or shaft.

In the picture the screw is the bottle cap. It helps by making the job of opening the bottle

easier.

Google Earth.lnk

This is a wedge. The definition is two inclined planes back to back.

The wedge in the picture is the thing sticking up. It helps by doing your cosmetic needs!

This is a wheel and an axel. The definition is a wheel\wheels connected by a long rod, or

Cylinder. The wheel + axel in the picture is the wheels on the library cart thingy. it helps

Those poor librarians who have to transport large amounts of books to shelves.

They get help by having it roll so you can use less pressure to push.