ERMS- 8th science: simple machines

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

• wedge
• screw
• lever
• inclined plane 

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 

An axe is an example of a

• pulley
• inclined plane
• screw
• wedge 

A seesaw is an example of a  

• wedge
• lever 
• inclined plane 
• pulley 

A device that has two or more simple machines working together 

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

Stairs

• wedge
• pulley
• inclined plane
• wheel and axle

Which is not a type of simple machine?

• spring
• screw
• pulley
• wedge

The fixed point on the lever is called 

• load
• resistance
• bar
• fulcrum

The transfer of energy that occurs when a force makes an object move is known as 

• effort
• potential 
• kinetic 
• work