CBSE-IX-Social-Science
03: Drainage
- #3-mNagarjuna Sagar
- #3-nHirakud
- Qstn #4Discuss the significant difference between the Himalayan and the Peninsular rivers.
Ans : Apart from their difference of origin, the Himalayan and the Peninsular rivers are different from each other in many ways. However, the significant difference between them is that while the Himalayan rivers are perennial rivers, the Peninsular rivers are seasonal. The Himalayan rivers have water throughout the year. They receive water from rain as well as from melted snow from the lofty mountains. On the other hand, the flow of Peninsular rivers is dependent upon rainfall. During the dry season, even the large rivers have reduced flow of water in their channels.
- Qstn #5Compare the east-flowing and the west-flowing rivers of the Peninsular Plateau.
Ans :
Major rivers flowing eastwards: Mahanadi, Godavari, Krishna, Kaveri
Only two long rivers flow westwards: Narmada, Tapi
Flow into the Bay of Bengal
Flow into the Arabian Sea
Carry greater amount of sediments, so form deltas at their mouths
Carry lesser amount of sediments, so form estuaries at their mouths
Greater number of tributaries
Lesser number of tributariesEast-flowing rivers of the Peninsular Plateau
West-flowing rivers of the Peninsular Plateau
- Qstn #6Why are rivers important for the country’s economy?
Ans : Rivers have been of fundamental importance throughout human history. Rivers, lakes, ice caps, ground water are the fresh water reserves of the Earth. Water is a basic natural resource, essential for various human activities. The water from the rivers is used for various domestic, industrial and agricultural purposes. The presence of rivers boosts trade and commerce by helping in the easy transport of goods. They are also a potential source of energy. The water from rivers is used for running hydro-electric dams. Regions having rivers are usually of great scenic and recreational value, and hence, serve as good tourist spots.
- #Section : IISECTION I Page No 25:
- Qstn #1Project/Activity
Solve this crossword puzzle with the help of the given clues.
Across
1. Nagarjuna Sagar is a river valley project. Name the river?
2. The longest river of India.
3. The river which originates from a place known as Beas Kund.
4. The river which rises in the Betul district of MP and flows westwards.
5. The river which was known as the “Sorrow” if West Bengal.
6. The river on which the reservoir for Indira Gandhi canal has been built.
7. The river whose source lies near Rohtang Pass.
8. The longest river of Peninsular India.
Down
9. A tributary of Indus originating from Himachal Pradesh.
10. The river flowing through fault, drains into the Arabian Sea.
11. A river of South India, which receives rain water both in summer and winter.
12. A river which flows through Ladakh, Gilgit and Pakistan.
13. A important river of the Indian desert.
14. The river which joins Chenab in Pakistan.
15. A river which rises at Yamunotri glacier.
Ans :