* Plate Tectonics: The Earth's outer layer, the lithosphere, is broken into large, moving plates called tectonic plates. These plates are constantly interacting, moving towards, away, or past each other.
* Convergent Plate Boundaries: When two plates collide, this is called a convergent plate boundary. Depending on the type of plates involved, one of the plates might subduct (slide) under the other.
* Folding: When continental plates collide, they have similar densities and neither plate is easily subducted. Instead, the intense pressure forces the land to buckle and fold, creating mountain ranges.
Examples:
* Himalayan Mountains: Formed by the collision of the Indian Plate and the Eurasian Plate.
* Appalachian Mountains: Formed by the collision of the African and North American Plates in the Paleozoic Era.
* Andes Mountains: Formed by the subduction of the Nazca Plate under the South American Plate.
While other events like volcanic activity and erosion can play a role in shaping mountain ranges, the primary driving force behind folded mountain formation is the collision of tectonic plates.
