So take your average earthquake. Do YOU know what causes it? Plate Boundaries.
Divergent- A function that exists between 2 tectonics plate that are moving away from each other. A famous example of divergent is the Red Sea Rift.
Convergent- It as an actively deforming region where 2 or more fragments of the lithosphere move toward one another and collide. The pretty much move toward each other.
Transform- Since this does not create or destroy it is a type of fault whose relative motion is mainly horizontal in either overlapping and not overlapping motion. The 2 plates join and rub against each other one going up and one going down.