1. SIMPLE MACHINES

2. What is a simple machine? It has few or no moving parts. It makes work easier.

3. Types of Simple Machines Inclined Plane Wedge Screw Lever Pulley Wheel and Axle

4. Inclined Plane – a slanted surface to make lifting easier. Examples: Boat Ramp, Bottom of a bath tub, Stairs, Ladder

5. Wedge – two inclined planes together, back to back. Usually used to split an object. Examples: knife, ax, zipper, door wedge

6. Screw – the combination of a wedge at the bottom and an inclined plane around it. Examples: drill bits, screws

7. Lever – most things with a handle attached; used to lift heavy objects; fulcrum Examples: Seesaw, Crowbar, Rake

8. Pulley – a wheel with a groove running around it with a rope, cable or chain to change the direction of a force, usually gravity Examples: fishing reel, crane, flag pole, clothes line

9. Wheel and Axle – a rod or post secured to a wheel Examples: Steering Wheel, Wheel Barrel, Faucet Handle, Door Knob, Fan, Screw Driver

10. Simple machines can be used together to make complex machinery.