Question

Give reasons for the following : 

1. Old fold mountains have low altitude and gentle slopes. 

2. Young fold mountains have rugged relief features. 

3. Young fold mountains are liable to Earthquakes and Volcanic action.

Answer 1

1. Old fold mountains have low altitude and gentle slopes because they have been subjected to denudations for million of years.

2. Young fold mountains have rugged relief features because they have been subjected to denudation for a comparatively short period only. 

3. Young fold mountains are liable to Earthquakes and volcanic action because these mountain regions are areas of crustal instability.