Answer:
The plates are moving towards each other. they usually involve a continental and oceanic plate. The oceanic plate is denser than the continental plate as they move together the oceanic plate is forced under the continental plate. The point at which this happens is called the subduction zone.
Explanation:
Predicting where an earthquake epicenter will occur is easier because are patterns to look at due to the fact that they always occur near plate boundaries. Predicting when they will occur is difficult because they do not follow any certain pattern.
Often, waterfalls form as streams flow from soft rock to hard rock. This happens both laterally (as a stream flows across the earth) and vertically (as the stream drops in a waterfall). In both cases, the soft rock erodes, leaving a hard ledge over which the stream falls
The answer is seafloor spreading
