This document discusses simple machines and how they help humans do work. It defines work as using force to move an object or create change. Simple machines can allow using less force or changing the direction of force applied. The document then lists and provides examples of common simple machines: the lever, pulley, inclined plane, wheel and axle, wedge, screw, and examples of how students have used simple machines in projects.

1. Simple MachinesChapter 16

2. All machines
help us do
work
What is a Machine
Work = using force to move an object or make a change
• Simple machines
sometimes allow
you to use less
force
• Other simple
machines change
the direction of the
force you use

3. Lever

5. The Pulley

7. Inclined Plane

9. The Wheel and Axle

11. The Wedge

12. ScrewEUREKA

13. Student Example

14. ExampleRUBE
GOLDBURG

15. The Coin
Flipper of
SCIENC
E