2. Forces What is a Force? Push or Pull What does it do? Causes Motion How do we describe it? Size (magnitude) Direction

3. What are the 7 simple machines? Lever Inclined Plane Wedge Screw Wheel and Axle Gear Pulley

4. Why do we use simple machines? To make life easier! Simple Machines change forces: change the direction change the size change both

5. How do they work? Conservation of Energy Work and Energy are related Scientific Definition of Work Work = Force x Distance distance in direction of force

6. Lever

7. Incline Plane

8. Wedge

9. Screw

10. Wheel and Axle

11. Gears

12. Pulley Change Force Direction Same Force Size

13. Scavenger Hunt Find the Simple Machines

14. In Your Classroom