What is a Machine Materials Input Machine Object

What is a Machine? Materials Input Machine Object Product Output

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

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

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

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

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

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

Incline Plane Change Force Direction Change Force Size

Wedge Change Force Direction Change Force Size

Screw Change Force Direction Change Force Size

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

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

Gears Change Force Direction Change Force Size

Pulley Change Force Direction Same Force Size

Scavenger Hunt Find the Simple Machines

In Your Classroom

Hubble!