Here's a breakdown:
* Compression: When tectonic plates collide, the immense pressure pushes the Earth's crust together.
* Folding: This pressure causes the rock layers to bend and buckle, forming folds.
* Uplift: As the folds develop, the compressed area rises above the surrounding terrain.
There are different types of folds, but the general idea is the same: compression forces rock layers to bend and create an elevated area.