Simple Machines

Which is an example of someone using a simple machine to do work?

• a boy runs across a football field
• a banker counts money
• a mother pushes a stroller up a ramp
• a girl eats a sandwich

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

• effort
• potential 
• kinetic 
• work 

An axe is an example of a

• pulley
• inclined plane
• screw
• wedge 

Lightbulb

• wedge
• pulley
• incline plane
• screw

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

• lever
• pulley
• wheel and axle
• fulcrum 

Which is not a type of simple machine?

• spring
• screw
• pulley
• wedge

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

• wheel and axle 
• lever
• inclined plane 
• pulley 

Two examples of a pulley...

• knife & axe blade
• lightbulb & screw
• flagpole hoist & window blinds
• catapult & teeter totter

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

• wedge
• screw
• lever
• inclined plane 

Which of the following does a simple machine do?

• allows the users to apply less force over a longer distance
• reduce the amount of force needed to do work
• change the direction of the applied force
• all of the above