Simple Machines

Question 0

Explain an incline plane

Answer 0

Ex. Truck bed with a ramp attached

More distance

4 times the distance equals 1/4 the effort

Question 1

What are the six simple machines?

What do they do?

Answer 1

1. Incline plane
2. Wheel and axle
3. Lever
4. Pulley
5. Wedge
6. Screw

Simple machines reduce required effort by minimizing friction or spreading effort over greater distance and time

Question 2

Explain a wheel and axle

Answer 2

1. Axle is point around which wheel rotates

2. Wheel reduces friction with the ground

Question 3

Explain a lever

Answer 3

Ex. Breaking apart an object with a crow bar.

1. Hold on opposite end
   further Away from the fulcrum
   more mechanical advantage
2. End that is breaking apart
   Close to the fulcrum exerts more mechanical effort

Question 4

Explain the pulley

Answer 4

Rope wrapped around a wheel and axle helps to lift an object

More wheels gives an advantage

** more distance - less effort

Question 5

Explain the wedge

Answer 5

Wedge breaks apart two objects

Question 6

Explain the screw

Answer 6

1. Screw spins around

2. Wood rides up the incline plane around the screw

Question 7

What is a fulcrum?

Answer 7

The point across which a lever rotates