Describe divergent boundaries. These are places where two plates are drifting apart. This is where new land mass is created from the lava which is bubbling up from underneath. There is a famous divergent fault in Iceland. The land cycle starts at divergent boundaries.
Move on to transform boundaries. These are places where two plates brush against one another moving in different directions. These are best described by thinking of two gears moving along side one another. A famous example of this kind of fault is the San Andreas fault in the western United States.
Finish with convergent boundaries. These are places in the crust where two plates crash into each other. They can be two pieces of continental plates, two pieces of oceanic plate or a combination of the both. These are very active and potentially destructive faults. When one plate dives below the other, this is called a subordination zone. Subordination zones are the end of the land cycle where crustal material is recycled.