Ch. 2 Physical Features Extra Questions
Q1. Explain the formation of Himalayas. A1. The convectional currents split the crust into a number of pieces, thus leading to the drifting of Indo-Australian plate after being separated from the Gondwana land, towards north. This resulted in the collision of the plate with the Eurasian plate. Due to the collision, the sedimentary rocks which were accumulated in the geosyncline (Tethys) were folded to form the mountain system of West Asia and the Himalayas. or A1. The Himalayas were formed by the Tethys sea. When the Tethys sea was pressurized by the Angara land and Gondwana land, the sedimentary rocks accumulated in the Tethys were folded to form the Himalayan mountain system. Q2. What is the significance of the Himalayas to India? A2. i) Himalayas are the source of perennial rivers e.g. Ganga, Yamuna etc. ii) They protect India from cold Siberian winds. iii) They prevent moisture bearing winds to cross the Indian subcontinent and thus India is not a desert. iv) The...