Question

1and2 social question

Answer 1

1) the Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian plate which begin 50 million years ago and continues today . 225 million years ago India was a large Island situated of the Australian Coast and separated from Asia by the tethys Ocean.

2) the major physiographic divisions of India a great mountains of the north North Indian plane Peninsula plateau Coastal Plains and the island Himalayas comprise the Himadri or the northernmost range Himachal is the middle Himalaya while Shivalik ranges make the outer Himalaya

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Answer 2

1) The earth is composed of several plates. In the past there was only one huge land mass or the Pangea. This Pangea broke up and drifted apart from one another. The Gondwana land was the southern part of this Pange. Due to conventional current, this Gondwan land was further broken down and split into several parts. One part of this Gondwan, the Indo-Australian plate started drifting towards the North. As a result it collided with the Eurasian plate in the North. This collision caused the sedimentary deposition of the Tethys to get folded forming the Himalayas.

2)

(1) The Himalayan Mountains:

(i) Three parallel ranges:

(a) Himadri

(b) Himachal or Lesser Himalayas

(c) Shiwaliks

(ii) Divisions demarcated by River Valleys:

(a) Punjab Himalayas

(b) Kumaon Himalayas

(c) Nepal Himalayas

(d) Assam Himalayas

(2) The Northern Plains: Indus, Ganga and Brahmaputra plains.

(3) The Peninsular Plateau:

(a) Central Highlands

(b) Deccan Plateau

(4) The Indian Desert

(5) The coastal plains

(a) Western coastal plain.

(b) Eastern coastal plain.

(6) The Island groups:

(a) Andaman and Nicobar Islands.

(b) Lakshadweep.

Main Mountain and Hill Ranges:

(i) In the Himalayas-Karakoram, Western Himalayas, Eastern Himalayas, Purvanchal.

(ii) In the Peninsular Plateau-Vindhyachal, Satpura, Mahadeo, Western Ghats and Eastern Ghats, Nilgiri Hills, Cardamom Hills.

Major Rivers:

(i) Flowing into the Bay of Bengal

(a) Ganga-Brahmaputra river system and their tributaries.

(b) Peninsular Rivers: Mahanadi, Godavari, Krishna and Kaveri.

(ii) Flowing into the Arabian Sea

(а) Indus river system with tributaries

(b) Narmada and Tapi rivers.