Drainage
Uttarakhand Board · Class 9 · Social Science
Flashcards for Drainage — Uttarakhand Board Class 9 Social Science. Quick Q&A cards covering key concepts, definitions, and formulas.
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Explore the full setWhat is drainage? Define the term with an example.
Answer
Drainage describes the river system of an area. It refers to the network of rivers, streams, and other water bodies that carry water from the land to larger water bodies like seas or oceans. For examp…
What is a drainage basin? How is it separated from other drainage basins?
Answer
A drainage basin is the area drained by a single river system. It includes all the land from which water flows into that particular river. Drainage basins are separated by elevated areas like mountain…
What are the two major groups of Indian rivers? Name the regions they originate from.
Answer
The two major groups of Indian rivers are: 1) Himalayan rivers - originating from the Himalayan mountain ranges, and 2) Peninsular rivers - originating from the peninsular plateau region of India.
Compare Himalayan and Peninsular rivers in terms of water flow throughout the year.
Answer
Himalayan rivers are mostly perennial (have water throughout the year) as they receive water from both rainfall and melted snow. Peninsular rivers are largely seasonal, dependent on rainfall, and have…
Name the three major Himalayan river systems.
Answer
The three major Himalayan river systems are: 1) The Indus River System, 2) The Ganga River System, and 3) The Brahmaputra River System.
Describe the course of the Indus River from its source to its mouth.
Answer
The Indus rises in Tibet near Lake Mansarowar, flows west into Ladakh, passes through Kashmir (joined by tributaries like Zaskar, Nubra), flows through Pakistan, and finally reaches the Arabian Sea ea…
What is the Indus Water Treaty? How much water can India use from the Indus system?
Answer
The Indus Water Treaty (1960) regulates water sharing between India and Pakistan. According to this treaty, India can use only 20% of the total water carried by the Indus river system, mainly for irri…
How is the Ganga formed? Name the place where its headwaters meet.
Answer
The Ganga is formed when its headwater 'Bhagirathi' (fed by Gangotri Glacier) joins with the Alaknanda at Devaprayag in Uttarakhand. The river then emerges from the mountains at Haridwar.
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