Question

Relate various physiographic divisions you have studied in the earlier grades with various endogenic forces responsible for their origin.

Answer 1

• The Himalayas: Formed mainly by the collision of the Indian Plate with the Eurasian Plate, which caused folding and uplift of the Earth's crust.
• The Northern Plains: Developed in a tectonic depression between the Himalayas and the Peninsular Plateau. This depression was later filled with sediments brought by rivers.
• The Peninsular Plateau: An ancient landmass formed through uplift, faulting and volcanic activity over a long period.
• The Coastal Plains: Their formation is associated with tectonic movements and changes in sea level, along with later deposition by rivers and the sea.
• The Islands: The Andaman and Nicobar Islands are associated with tectonic activity, while some islands have a volcanic origin.

Thus, the major physiographic divisions of India were shaped by different endogenic forces such as plate movements, folding, faulting, uplift and volcanic activity.