Wedge

A wedge is a type of simple machine. A wedge has two inclined planes. The planes meet and form a sharp edge. The edge cuts or splits things apart.
 * What is a wedge? **

doorstop, knives, axes, forks, and nails
 * Some examples of a wedge: **

http://www.schooltube.com/video/84f360c638bb482ca8ed/Wedge-The-Simple-Machine
 * Check out this video clip to help you better understand how this simple machine makes work easier. **