These convergent boundaries also occur where a plate ... often spewed out in volcanic eruptions such as those that formed some of the mountains in the Andes of South America.

Build mountains ... For more on divergent boundary, go to The Sea Floor Spread. Also known as subduction boundary, a convergent boundary occurs where one plate slides under another as the two ...

Instead, the two crush together at what is known as a collisional boundary. They crumple and ... Even the Appalachian Mountains formed when two land masses came together. Although with the ...