When two plates separate and create new oceanic crust, a divergent plate boundary forms. This process occurs where the seafloor spreads along a mid-ocean ridge, as shown to the right. This process can also occur in the middle of continents and is referred to as a continental rifting.
Two plates slide horizontally past one another along a transform plate boundary. Earthquakes are common along this type of plate boundary. The San Andreas Fault, shown to the bottom, is part of the transform plate boundary that extends along the coast of California.
This is the San Andreas Fault line
When an oceanic and a continental plate collide, they form a convergent plate boundary. The denser plate will subduct . A volcanic mountain, such as Mount Rainier in the Cascade Mountains, forms along the edge of the continents