SEBA Class 8 Social Science Chapter 7 Rivers of Assam Solutions English Medium As Per New Syllabus Provided by The Roy Library. SEBA Class 8 Social Science Chapter 7 Rivers of Assam Notes is made for SEBA English Medium Students. SEBA Class 8 Social Science Question Answer We ensure that You can completely trust this content. If you learn PDF Then you can Download Now PDF. I hope You Can learn Better Knowledge.
SEBA Class 8 Social Science Chapter 7 Rivers of Assam
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Rivers of Assam
| Exercise |
1. Write answers:
(a) Name the glacier which is the source of the Brahmaputra river.
Ans: The source of the Brahmaputra river is the Chemayung-dung glacier.
(b) What is the total length of Brahmaputra river?
Ans: The total length of the Brahmaputra river is 2906 kilometres.
(c) In which country is the source of the Brahmaputra river?
Ans: The source of the Brahmaputra river is in Tibet (China).
(d) What is the shape of a river in the upper course?
Ans: In the upper course the river generally takes a ‘U’ shaped course and forms canyons.
(e) Name the countries through which the Brahmaputra flows.
Ans: The Brahmaputra flows through China (Tibet), India and Bangladesh.
2. Write the correct answer:
(a) Canyons are geographical features found in the lower/mouth/upper course of a river.
Ans: Upper course.
(b) Braided rivers are generally seen in mountains/plains/plateson.
Ans: Plains.
(c) Flood plains are formed due to river erosion/transportation/deposition.
Ans: Deposition.
(d) The river Barak flows through 2/3/4 districts of Assam.
Ans: 3 districts.
(e) The length of the river Barak is 900 kms|2200 kms/2006 kms.
Ans: 900 kms.
3. Match:
| Arunachal | Zig-zag path |
| Tsangpo | Majuli |
| Meandering | Siang |
| Kollong | Tibet |
| River island | Suti (branch) |
Ans:
| Arunachal | Siang |
| Tsangpo | Tibet |
| Meandering | Zig-zag path |
| Kollong | Suti (branch) |
| River island | Majuli |
4. Write short notes:
(a) Work of a river in the upper course.
Ans: In the upper course the river flows from steep slopes with high speed. Erosion is very high and the river bed becomes deep. The river forms ‘U’ shaped valleys and canyons in this course.
(b) Work of a river in the middle course.
Ans: In the middle course the slope becomes gentle and the speed of the river decreases. Lateral erosion becomes more important. The river flows in a zig-zag or meandering path and deposits sediments on the banks.
(c) Work of a river in the lower course.
Ans: In the lower course the river flows very slowly. Deposition is more than erosion. Flood plains, sand bars, braided channels and delta are formed in this course.
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