Here's why:
* Convergent boundaries are where two tectonic plates collide. This collision can result in:
* Continental-continental collisions: When two continental plates collide, the immense pressure causes the land to buckle, fold, and uplift, forming mountain ranges. The Himalayas are a prime example of this type of mountain building.
* Oceanic-continental collisions: When an oceanic plate collides with a continental plate, the denser oceanic plate subducts (dives) beneath the continental plate. This process can lead to the formation of volcanic mountain ranges along the edge of the continent. The Andes Mountains are a good example.
* Oceanic-oceanic collisions: When two oceanic plates collide, the denser plate subducts beneath the other. This can lead to the formation of volcanic island arcs, such as the Japanese islands.
Other plate boundaries:
* Divergent boundaries (where plates move apart) are associated with the formation of mid-ocean ridges and rift valleys, not mountains.
* Transform boundaries (where plates slide past each other) primarily cause earthquakes, not mountain building.
While convergent boundaries are the primary driver of mountain building, other factors, like erosion and volcanic activity, also play a role in shaping mountain ranges over time.
