Here's how it happens:
* Pressure: When tectonic plates collide, the immense pressure causes the layers of rock (strata) to buckle and bend.
* Folding: The bending creates folds, which can be either anticlines (upward arches) or synclines (downward troughs).
* Mountain Formation: The anticlines, pushed upward by the pressure, form the peaks and ridges of the mountain range.
Examples of fold mountains:
* The Himalayas: The world's highest mountain range, formed by the collision of the Indian and Eurasian tectonic plates.
* The Alps: Formed by the collision of the African and Eurasian plates.
* The Appalachian Mountains: Formed by the collision of the North American and African plates millions of years ago.