Fold mountains form along both destructive and collision plate boundaries.

They form when two plates with landmasses on them move towards each other.

The plates push layers of accumulated sediment in the sea into folds between them.

This becomes a fold mountain range.

Most fold mountains continue to grow as the plates constantly move.

Examples: the Himalayas (Asia), Rockies (USA), Andes (South America), Alps (Europe)

This short animation explains how tectonic activity forms moutain ranges