compound+machines

 **What is a compound machine? **
 * A device that combines 2 or more simple machine. **

**Give an example of a compound machine. **


 * Lawn mower **

examples of machines in the lawnmower - blade (wedge), wheels (wheel and axle), handle (lever), motor switch (wheel and axle)


 * Cork Screw **

examples of machine in cork screw - wedge (bottom), screw (bottom), lever (arms), wheel and axle (twist at top)

examples of machines in can opener - lever (handle), wedge (blade), wheel and axle (crank), gears
 * Manual Can Opener **


 * bicycle **

examples - pulley (chain), lever (gear shift), wheel and axle (wheels), gears


 * rake **

examples - wedge (pointed ends), lever (long handle),


 * tulip bulb planter **

examples - wedge (bottom point), screw and wheel and axle (top handle when pushing)


 * shovel **

examples - wedge (bottom of shovel), lever (long handle)

**Describe the different simple machines you would find in the compound machines above. **

[[image:http://1.bp.blogspot.com/_xUF_snYmhFY/TIJSW64R5PI/AAAAAAAAABw/wDn-RE-8FYI/s1600/commach%5B1%5D.jpg]]
Typewriter? . . . . What's a typewriter?

I think pencil sharpeners have also modernized a bit, too.