Simple Machines

How many simple machines are there?

• 4

• 5

• 6

• 9

A seesaw is an example of a

• wedge

• lever

• inclined plane

• pulley

Lightbulb is a kind of a/an

• wedge

• pulley

• incline plane

• screw

The device used to raise a flag up a flag pole is an example of a

• wheel and axle

• lever

• inclined plane

• pulley

In a first class lever, the (a)   is in the middle (remember FLE 123)

In a second class lever, the (a)   is in the middle ( remember, FLE 123)

In a third class lever, what is in the middle? ( Remember FLE 123)

• Fulcrum

• Load

• Effort

• Wedge

Which type of simple machine would help you raise a flag on a flagpole?

• Wedge
• Pulley
• Inclined Plane
• Lever

A simple machine is a device that helps to reduce the amount of _____ required to work.

• force
• energy
• work

____ is done when a force is applied over a distance.

• energy
• work
• force