1. Simple Machines

2. Simple machines help us do work. Machines make work easy.
A Simple Machine?
Simple machines help us do work.
Machines make work easy.

3. So What? Simple machines make work easier
Simple machines either change the amount of force on an object or change the direction of the force
Machines DON’T diminish the amount of work we do—they just make it easier!
Two or more SIMPLE machines make a COMPLEX machine!

4. What is a Simple Machine?
Simple machines have few or no moving parts.
There are 6 kinds of simple machines.

5. What are the 6 kinds of simple machines?
Inclined plane
2. Wedge
3. Screw
Wheel and axle
5. Pulley
6. Lever

6. An Inclined Plane?

7. Actually, an Inclined Plane…
…inclined plane is like a flat board that is higher on one end.
…inclined plane makes work easier.

8. Can you think of some other inclined planes?

9. A Wedge?

10. Actually, a wedge… … is two inclined planes pushed together like a V.
…pushes things away from each other.
…split things.

11. Can you think of some other wedges?

12. A Screw(ge)?

13. Actually, a screw…
…is an inclined plane wrapped around a shaft or cylinder (the inclined plane allows the screw to move itself when rotated).
…holds things together and can make them go up and down.

14. Can you think of some other screws?

15. Wheels and axles?

16. Actually, a wheel and axle…
…is a pole that goes through the wheel which allows the wheel to turn

17. Can you think of some other wheels and axles?

18. Pulleys?

19. …is a wheels and axles with a groove around the outside
Actually, a pulley…
…is a wheels and axles with a groove around the outside
..needs a rope, chain or belt around the groove to make it do work

20. Can you think of some other pulleys?

21. Lever?

22. Actually, a lever…
… is a board on top of something else.
…can balance things or move them

23. Can you think of some other levers?

24. Simple Machines
Simple machines can be put together in different ways to make complex machinery