Class 9 Geography Chapter 3: Drainage
Class 9 Geography Chapter 3: Drainage Basic Drainage Concepts Q: What is meant by the term 'drainage'? A: It describes the river system of an area. Q: What is a 'drainage basin'? A: The area drained by a single river system is called a drainage basin. Q: What is a 'water divide'? A: Any elevated area, such as a mountain or an upland, that separates two drainage basins is known as a water divide (e.g., the Ambala water divide between the Indus and Ganga river systems). Q: Which is the world's largest drainage basin? A: The Amazon River basin in South America. The Himalayan Rivers Q: Where does the river Indus originate? A: It originates in Tibet, near Lake Mansarovar . Q: According to the Indus Water Treaty (1960), what percentage of the Indus river system's water can India use? A: India can use only 20% of the total water carried by the Indus river system. Q: What are the two headwaters of the Ganga? A: The Bhagirathi (originating from the G...