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. Lever Change Force Direction Change Force Size Resulting Force X Distance = Applied Force X Distance

6. Incline Plane Change Force Direction Change Force Size

7. Wedge Change Force Direction Change Force Size

8. Screw Change Force Direction Change Force Size

9. Wheel and Axle Same Direction Change Force Size Resultant Force X Wheel Radius = Applied Force X Axle Radius

10. Gears Change Force Direction Change Force Size

11. Pulley Change Force Direction Same Force Size

12. Scavenger Hunt Find the Simple Machines

13. In Your Classroom