A flat sloping surface that connects lower and higher elevations. It makes raising objects easier.  

• wedge
• screw
• lever
• inclined plane 

Two inclined planes placed back to back forms this simple machine 

• pulley
• wedge
• lever
• wheel and axle 

An inclined plane wrapped around a rod forms this simple machine 

• lever
• pulley
• screw
• wedge 

A simple machine that consists a rigid bar that pivot about a fixed point

• lever
• pulley
• wheel and axle
• fulcrum 

A seesaw is an example of a  

• wedge
• lever 
• inclined plane 
• pulley 

An axe is an example of a

• pulley
• inclined plane
• screw
• wedge 

A device that has two or more simple machines working together 

• fulcrum 
• pulley
• compound (complex) machine 
• motor 

Flagpole

• wedge
• pulley
• incline plane
• wheel and axle

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

Lightbulb

• wedge
• pulley
• incline plane
• screw