Class-9 So-Studies Geography Chapter 3 (Drainage)

 Social Studies Geography 

Chapter 3 Drainage 

A. Choose the right answer from the four alternatives given below.

1.In which of the following states is the wular lake located?

a. Rajasthan                 b.Jammu and Kashmir (√ )

2.The river narmada has its source at

a.Amarkantak (√ )        b.Satupura

3. which one of the following is the longest river of the peninsular India.

a.Narmada                   b.Godavari(√ )

4. which one of the following is the longest river of the peninsular India?

a. Tapi(√ )                    b.Mahanadi

 

B.Mention the Naural lake and Man made lake:-

Natural Lake	Manmade Lake
Walar	Gobind Sagar
Dal	Rana Pratap Sagar
Nainital	Nizam Sagar
Bhimtal	Nagarjuna sagar
Loktak	Hirakud
Barapani
Chilka
Sambhar
Pulicat

 C.Answer the following questions:-

Question-1What is meant by the water divide? Give an example.
Solution:Any elevated area, such as a mountain or upland, separates two drainage basins. Such upland is known as the water divide. Ambala is located on the water divide between the Indus and the Ganga river systems.

Question-2Which is the largest river basin in India?
Solution:The Ganga basin is the largest basin in India.

Question-3 Where do the rivers Indus and Ganga have their origin?
Solution: The headwaters of the Ganga called the ‘Bhagirathi’ is fed by the Gangotri Glacier and joined by the Alaknanda at Devaprayag in Uttaranchal. At Haridwar, the Ganga emerges from the mountains on to the plains. The Indus flows through Baltistan and Gilgit and emerges from the mountains at Attock.

Question-4 Name the two headstreams of the Ganga. Where do they meet to form the Ganga?
Solution: Alakananda and Bhagirathi are the two headstreams of the Ganga. They meet at Devaprayag.

Question-4 Name the two headstreams of the Ganga. Where do they meet to form the Ganga?
Solution: Alakananda and Bhagirathi are the two headstreams of the Ganga. They meet at Devaprayag.

Question-5 Why does the Brahmaputra in its Tibetan part have less silt, despite a longer course?

Solution:The Brahmaputra river, which is known as Tsangpo in Tibet, receives a very little volume of water in Tibet so it has less silt there. On the other hand, this very river when enters India it passes through such a region which receives heavy rainfall. As such in India, it carries a large volume of water and a larger amount of silt

Question-6Which two Peninsular rivers flow through trough?
Solution:Narmada and Tapi are the two Peninsular rivers, which flow through the trough

Question-7Discuss the significant difference between the Himalayan and the Peninsular rivers.
Solution:The Himalayan Rivers The Peninsular or Deccan Rivers
1. The Himalayan rivers rise in the snow-covered mountains as such they flow throughout the year. The mountains in which the Deccan rivers rise are not snow-covered. Hence they dry up in summer.

2. The Himalayan rivers flow in leveled Northern Plains. Therefore, they are quite useful for navigation and irrigation. The Peninsular rivers flow on the uneven rocky surface. Therefore they are neither navigable nor useful for irrigation.

3. The Himalayan rivers bring with them fertile alluvium which they deposit in the Indo-Gangetic Plains. The Peninsular rivers do not bring with them enough alluvium. As the current is swift so the deposition activity is negligible

4. Many important towns and centres of trade are situated on the banks of these rivers. Very few important towns and centres of trade are situated on the banks of these rivers.