Simple Machines

" They make our lives easier."

There are six simple machines

Machines make "work" easier. Think about how easy raising a flag on a flag pole is when you use a pulley.

Now, imagine having to do it without a pulley. A pulley is one of the six simple machines.

Inclined Plane - a simple machine that is a straight, slanted surface.
Pulley - a simple machine consisting of a grooved wheel that holds a rope or cable.
Lever - a simple machine consisting of a bar that pivots at a fixed point, called a fulcrum.
Wedge - a simple machine that is a doubled inclined plane that moves; a wedge is often used for cutting
Wheel and Axle - a simple machine consisting of two circular objects of different sizes; the wheel is the larger of the two circular objects.
Screw - a simple machine that is an inclined plane wrapped around a spiral.



Complex/Complound machines are made up of 2 or more simple machines.

Click here to see some examples.

Click on the link below to explore the uses of simple and complex machines.




Play a Simple Machines Game!!! ..Watch the Bill Nye Video on Simple Machines!!!

               Take a practice quiz

1.  A jar lid is an example of a:_________________. 

pulley    wedge   screw    inclined plane 

2.  A ramp is an example of a ____________________.

pulley    wedge    screw    inclined plane 

3.  A ladder is an example of a ____________________.

pulley    wheel axle    screw    inclined plane 

4.  A can opener is an example of a ____________________.

lever    wheel axle    screw    wedge 

5.  A pair of scissors is a complex (compound) machine made of _____________ and _______________.

lever and wedge    wheel axle and lever    screw and pulley    wedge and pulley 

6.  A _________________ would help you raise a flag on a flag pole.

lever    pulley    screw    wedge 

7.  A machine made up of more than one machine is called a ____________________________machine

simple    complex    complicated   wedges 

8.  The simple machine used most often for cutting something is the ____________________________

lever    pulley    screw    wedge 

9.  A light bulb is considered a _________________________

lever    pulley    screw    wedge 


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