Question

Write short notes on the Northern Plains and the Indian Desert

CBSE Class IX Social Science LA (5 Marks)

Answer 1

Northern Plains :

(a)  The northern plains have been formed from the alluvium deposited by the mountain rivers.

(b) They are located between the Himalayan Rivers in the north and the Peninsular Plateau in the south.

(c)  They turned the soil on the surfaced land fertile for growing a rich harvest of variety of crops. This led to the development of the Indus river valley civilization.

(d) They are made up of deposits of alluvium and cover an area of 7 lakh sq. km.

(e)  They are densely populated physiographic division of India and are believed to be highly productive in terms of agriculture.

(f)  The North Indian plains have the Indus river system in the West and the Ganga-Brahmaputra river system in the East.

(g) The first includes : Jhelum, Chenab, Rabi, Beas, Satluj. The Indus flows into the Arabian Sea.

The second includes Ganga, Brahamaputra which combines with Meghna at the point when it drains into the Bay of Bengal. They form the world's largest and fastest growing delta.

On the basis of difference of relief, they are divided into four parts—Bhabar, Terai, Bhangar and Khadar. Indian Desert :

(a)  They lie towards the western margins of the Aravalli Hills.

(b) It is an undulating sandy plain covered with sand dunes.

(c)  This region receives very low rainfall below 150 mm per year.

(d) It has arid climate with low vegetation cover.

(e)  Streams appear during the rainy season.

(f)  Luni is the only river in this region.

(g) The Barchans cover larger areas but longitudinal dunes become more prominent near the Indo­Pakistan border.

Answer 2

Explanation:

) They lie towards the western margins of the Aravalli Hills. (b) It is an undulating sandy plain covered with sand dunes. (c) This region receives very low rainfall below 150 mm per year. (d) It has arid climate with low vegetation