PLTW - POE - 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 of a rigid bar that pivots about a fixed point

• lever

• pulley

• wheel and axle

• fulcrum

Stairs best represent which answer option?

• wedge

• pulley

• inclined plane

• wheel and axle

Which is not a type of simple machine?

• spring
• screw
• pulley
• wedge

What type of simple machine does this image best represent?

• wheel and axle

• gear

• lever

• inclined plane

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 

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

• wheel and axle 
• lever
• inclined plane 
• pulley 

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