A

2. What is a Machine?
Machine Product
Output
Object
Input
Materials

3. What is a Machine?
TV
Sound
Output
Object
Input
Electricity
Example - TV
Signal
Picture

4. What is a Machine?
Simple
Machine Force
Output
Object
Input
Simple Machine
Force

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

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

7. What are the 6 simple machines?
• Inclined Plane
Wedge
Screw
• Lever
• Wheel and Axle
Pulley

8. How do simple machines work?
Conserve Energy
Applied Resultant
Force x Distance = Force x Distance
force x Distance = Force x Distance

9. Incline Plane
Change Force Direction
Change Force Size

10. Wedge
Change Force Direction
Change Force Size

11. Screw
Change Force Direction
Change Force Size

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

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

14. Gears
Change Force Direction
Change Force Size

15. Pulley
Change Force Direction
Same Force Size

16. Scavenger Hunt
Find the Simple Machines

17. In Your Classroom

25. Hubble!