1. Simple Machines

2. Definitions Potential Energy Simple Machine Compound Machine Energy
A device used to make work easier by allowing for a push / pull to occur over a increased distance = mechanical advantage
Compound Machine
Two or more simple machines working together to make work easier
Energy
The ability to do work
Kinetic Energy
Energy in motion
Potential Energy
Energy at rest

3. Lever
A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads. 

4. LEver

5. Lever

6. Wheel and Axle
A wheel with a rod, called an axle, through its center used to lift or move loads.

7. Wheel and Axle

8. Wheel and Axle

9. Pulley
A pulley is a simple machine that uses grooved wheels and rope, string, or chain to raise, lower or move a load.

10. Pulley

11. Pulley

12. Inclined Plane
An inclined plane is a slanting surface connecting a lower level to a higher level.

13. Inclined Plane

14. Inclined Plane

15. Wedge
A wedge is an object with at least one slanting side ending in a sharp edge, which can be used to cut materials

16. Wedge

17. Wedge

18. Screw
A screw is an inclined plane wrapped around a pole which holds things together or moves materials.

19. Screw

20. Screw