Look at the Grand Canyon. Did you know it wasn't always a canyon? The Grand Canyon sits on a "plate". A plate is a broken piece of the earth's crust. What the plate has done is called "divergent". Where two plates move away from each other in different directions <-- -->. Convergent is when two plates move toward each other and collide --><--. Transform, is when two plates slide back and forth against each other .
*map courtesy of: