Here's why:

* Convergent Boundaries: These are places where tectonic plates collide. The immense pressure and force of these collisions can cause the land to buckle, fold, and uplift, creating mountains.

* Types of Convergent Boundaries:

* Continental-Continental Collisions: When two continental plates collide, they buckle and fold, creating mountain ranges like the Himalayas (formed by the collision of the Indian and Eurasian plates).

* Oceanic-Continental Collisions: When an oceanic plate collides with a continental plate, the denser oceanic plate subducts (sinks) beneath the continental plate. This can create volcanic mountain ranges along the continental margin, like the Andes Mountains.

Therefore, mountains are a direct result of the forces acting at convergent boundaries.