1. MACHINES
Devices that make work easier by changing the size and/or the direction of the force. They will not do work for you.

2. Machines that can do a task with one single movement.
SIMPLE MACHINES
Machines that can do a task with one single movement.

3. SIMPLE MACHINES
Lever
Pulley
Wheel and Axle
Inclined Plane
Screw
Wedge

4. Lever
A simple machine consisting of a bar that is free to pivot (rotate) around a fixed point called the fulcrum.
Ex: scissors, crowbar

5. Pulley
A simple machine consisting of a grooved wheel with a rope running along the groove.
Ex: flagpole

6. Wheel & Axle
A simple machine consisting of two different sized wheels that rotate together.
Ex: door knob, steering wheel

7. Inclined Plane
A simple machine consisting of a sloping surface or ramp used to raise objects.
Ex: loading ramp

8. Inclined Planes
Mountain roads are inclined planes so that cars don’t have to climb straight up. A definite advantage!
Also, think about parking garages.

9. Screw
A simple machine consisting of a special type of inclined plane wrapped in a spiral around a cylindrical post.
Ex: spiral staircase, screw

10. Wedge
A simple machine consisting of a moving inclined plane with one or two sloping sides.
Ex: knife, chisel

11. Compound Machines
A compound machine is a combination of several simple machines.
Ex: bicycle