Question

what is fold mountain?.....

Answer 1

Fold mountains are mountains that form mainly by the effects of folding on layers within the upper part of the Earth's crust. Before either plate tectonic theory developed, or the internal architecture of thrust belts became well understood, the term was used for most mountain belts, such as the Himalayas

Answer 2

Mountains which are formed by movement of tectonic plates are known as Fold mountain. There are 2 types of Fold Mountain :-
1) Young Fold Mountain eg Himalaya
2) Old fold Mountain.