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Drainage Class 9 Questions and Answers Geography Chapter 3
Make your learning experience enjoyable by preparing from the quick links available on this page. Use the Class 9 SST Geography Chapter 3 NCERT Solutions and get to know different concepts involved. All the Solutions are covered as per the latest syllabus guidelines. Knowing the NCERT Class 9 Geography Chapter 3 Questions and Answers helps students to attempt the exam with confidence.
Drainage NCERT Intext Questions and Answers
Lets’s Discuss, NCERT Textbook Page 17
Question 1.
Which river has the largest basin in India?
Answer:
Ganga river has the largest basin in India.
Lets’s Discuss, NCERT Textbook Page 22
Question 1.
The name of the biggest waterfall in India.
Answer:
The Kunchikal Falls in Karnataka is the biggest waterfall in India.
Geography Class 9 Chapter 3 NCERT Textbook Questions and Answers
Question 1.
Choose the right answer from the four alternatives given below:
(i) Which one of the following describes the drainage patterns resembling the branches of a tree?
(a) Radial
(b) Dendrite
(c) Centrifugal
(d) Trellis
Answer:
(b) Dendrite
(ii) In which of the following states is the Wular lake located?
(a) Rajasthan
(b)Uttar Pradesh
(c) Punjab
(d) Jammu and Kashmir
Answer:
(d) Jammu and Kashmir
(iii) The river Narmada has its source at ………….
(a) Satpura
(b) Bhagirathi
(c) Amarkantak
(d) slopes of the Western Ghats
Answer:
(c) Amarkantak
(iv) Which one of the following lakes is a salt water lake?
(a) Sambhar
(b) Dal
(c) Wular
(d) Gobind Sagar
Answer:
(a) Sambhar
(v) Which one of the following is the longest river of the Peninsular India?
(a) Narmada
(b) Krishna
(c) Godavari
(d) Mahanadi
Answer:
(c) Godavari
(vi) Which one amongst the following rivers flows through a rift valley?
(a) Mahanadi
(b) Tungabhadra
(c) Krishna
(d) Tapi
Answer:
(d) Tapi
Question 2.
Answer the following questions briefly.
(i) What is meant by a water divide? Give an example.
(ii) Which is the largest river basin in India?
(iii) Where do the rivers Indus and Ganga have their origin?
(iv) Name the two headstreams of the Ganga. Where do they meet to form the Ganga?
(v) Why does the Brahmaputra in its Tibetan part have less silt, despite a longer course?
(vi) Which two peninsular rivers flow through trough?
(vii) State some economic benefits of rivers and lakes.
Answer:
(i) Any mountain or an upland separating two adjoining drainage basins is known as water divide. An example of water divide is the Western Ghats.
(ii) The Ganga river basin is the largest one in India.
(iii) The Indus river has its origin in Tibet near lake Mansarovar while the Ganga river has its origin Gangotri glacier in Uttarakhand.
(iv) Alaknanda and Bhagirathi are the two headwaters of the Ganga. They meet at Devprayag to form the Ganga.
(v) The Brahmaputra, which is known as the Tsang Po in Tibet, carries a smaller volume of water and less silt as it is a cold and a dry area.
(vi) The Narmada and the Tapi flow through trough.
(vii) Rivers are important for agricultural purpose and generating hydro-electricity. They help develop tourism and provide recreation.
Lakes help to regulate the flow of rivers. They prevent flooding during heavy rainfall. They moderate the climate of the surrounding, maintain the aquatic ecosystem and enhance natural beauty. They also help to maintain an even flow of water.
Question 3.
Below are given names of a few lakes of India. Group them under two categories natural and created by human beings.
Answer:
Question 4.
Discuss the significant difference between the Himalayan and the peninsular rivers.
Answer:
Some of the significant difference between the Himalayan and the Peninsular rivers are given below:
| The Himalayan rivers | The Peninsular rivers |
| (i) These rivers originate from the Himalayas. | (i) These rivers originate in small hills and plateaus. |
| (it) These are perennial rivers. It means that they have water from rain as well as from melted snow from the lofty mountains. | (ii) A large number of the peninsular rivers are seasonal, as their flow is dependent on rainfall. During the dry season, they have reduced flow of water in their channels. |
| (iii) Most of the Himalayan rivers have long courses from their source to the sea. | (iii) The Peninsular rivers have shorter and shallower courses as compared to their Himalayan counterparts. |
| (iv) They have much larger drainage basins. | (iv) They have smaller drainage basins. |
| (v) The Himalayan rivers cause much erosion and have great flow of water. | (v) The Peninsular rivers create much less erosion and have weaker flow of water. |
Question 5.
Compare the east flowing and west flowing rivers of the Peninsular plateau.
|
The east-flowing rivers |
The west-flowing rivers |
| (i) The east flowing rivers of the Peninsular plateau drain into the Bay of Bengal. | (i) The west flowing rivers of the Peninsular plateau drain into the Arabian Sea. |
| (ii) These rivers make deltas at their mouths. | (ii) These rivers make estuaries. |
| (iii) East flowing rivers are usually longer in size. | (iii) West flowing rivers are usually shorter in size. |
Question 6.
Why are rivers important for the country’s economy?
Answer:
- Rivers are of utmost importance for the country’s economy. Their water is used for irrigation without which farming is almost impossible.
- Rivers boost-trade and commerce by helping in the easy transport of goods.
- River water is used for navigation and transport. Without rivers commercial activities will come to standstill.
- Rivers main aquatic ecosystem, enhance natural beauty, help develop tourism and provide recreation.
- Many of the multi-purpose projects in India have been built on rivers.
- Rivers are a major source of fish which provide livelihood to a big section of the population.
Map Skill
Question 1.
On an outline map of India mark and label the following rivers: Ganga, Satluj, Damodar, Krishna, Narmda, Tapi, Mahanadi and Brahmaputra.
Answer:
Question 2.
On an outline map of India mark and label the following lakes : Chilika, Sambhar, Wular, Pulicat, Kolleru.
Answer:
Project/Activity
Question 1.
Solve this crossword puzzle with the help of 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 rivers which rises in the Betul district of MP and flows westwards.
5. The river which was known as the ‘Sorrow’ of 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 rainwater both in summer and winter.
12. A river which flows through Ladakh, Gilgit and Pakistan.
13. An important river of the Indian desert.
14. The river which joins Chenab in Pakistan.
15. A river which rises at Yamunotri glacier.
Across
1. Krishna
2. Ganga
3. Beas
4. Tapi
5. Damodar
6. Satluj
7. Ravi
8. Godavari
Down
9. Chenab
10. Narmada
11. Kaveri
12. Indus
13. Luni
14. Jhelum
15. Yamuna
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