simple machines-- KNICKS RULE

What type of simple machine is this?

• wheel and axle
• gear
• lever
• inclined plane

This device

• wedge
• lever
• incline plane
• wheel and axle

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

Lightbulb

• wedge
• pulley
• incline plane
• screw

Flagpole

• wedge
• pulley
• incline plane
• wheel and axle

Scissors are an example of a compound machine. What simple machines are used to make up this compound machine?

• 2 levers and 2 inclined planes
• 2 levers and 2 pulleys
• 2 pulleys and 2 inclined planes

A simple machine that is made up of an incline plane wrapped around a cylinder. It is often used to hold things together.

• lever
• screw
• wedge

A simple machine that can split things apart or hold a door open.

• wedge
• screw
• lever

A sloping force, like a ramp, that reduces the mount of force required to lift an object.

• screw
• wheel and axle
• inclined plane

A ______ is a grooved wheel with a rope running along the groove.

• lever
• pulley
• screw