If a river system has a main river and many tributaries draining one area, what is the most correct term for that area?
A drainage basin is the area drained by a river system. Exam tip: connect a river area with basin.
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SubjectsGeography
भारत की अपवाह प्रणालियाँ
In this Class 9 Geography topic from the chapter Drainage, students learn how water flows across India through river systems, drainage basins, and networks. They explore the Himalayan and Peninsular river systems, compare their origins, courses, seasonal flow, and landforms, and understand patterns such as dendritic, trellis, and radial drainage. The topic also introduces the importance of rivers and lakes, along with concerns related to floods, pollution, and water management.
TOPIC PRACTICE
Up to 20 questions from this page. Select your focus, then start.
A drainage basin is the area drained by a river system. Exam tip: connect a river area with basin.
View question detailsA high strip of land between two drainage basins is called a water divide or drainage divide. Rain falling on one side flows into one river system, while rain falling on the other side flows into another system. The high land does not normally mix the waters; instead, it separates their routes and determines the direction of surface runoff. The divide may be a ridge, plateau, or other elevated landform.
Option B is correct because the elevated boundary sends water toward different drainage basins. It does not always force a river underground, create a volcano from a delta, or mix both basins. Option A gives the opposite idea of a divide. Therefore, identifying high land as a basin boundary explains why water flows in separate directions.
Erosion is strong on upper slopes and sediments deposit in plains. Exam tip: remember river process by course.
View question detailsPeninsular India is old and hard, so river courses are relatively stable. Exam tip: link old plateau with river course.
View question detailsA perennial river has water throughout the year. Exam tip: connect Himalayan rivers with perennial nature.
View question detailsRivers dependent on monsoon rainfall show seasonal variation. Exam tip: link Peninsular rivers with rainfall dependence.
View question detailsThese five rivers are linked with the Indus river system. Exam tip: remember Punjab rivers as a separate group.
View question detailsAt Devprayag, Bhagirathi and Alaknanda meet and are called Ganga. Exam tip: link confluence place with river name.
View question detailsAlluvial soil makes plains fertile. Exam tip: connect the Ganga plain with river deposition.
View question detailsGhaghara, Gandak and Kosi are major left-bank tributaries of the Ganga. Exam tip: remember them together.
View question detailsSon is a major right-bank tributary of the Ganga. Exam tip: keep right and left bank rivers separate.
View question detailsCourse shifting and floods are key features of Kosi. Exam tip: treat it as a flood-prone river of the Ganga system.
View question detailsBrahmaputra is called Tsangpo in Tibet and Brahmaputra in India. Exam tip: remember river name with location.
View question detailsBrahmaputra carries high water and sediment, so it may split into channels. Exam tip: connect braided channel with Assam.
View question detailsMajuli is a famous river island associated with Brahmaputra. Exam tip: remember it with Assam and Brahmaputra.
View question detailsSundarbans is famous for the Ganga-Brahmaputra delta and mangrove forests. Exam tip: remember delta and vegetation together.
View question detailsGodavari is the longest and important river of Peninsular India. Exam tip: identify it by the name Dakshin Ganga.
View question detailsThese rivers drain into the Bay of Bengal and form deltas. Exam tip: link east-flowing rivers with deltas.
View question detailsNarmada and Tapi are west-flowing Peninsular rivers. Exam tip: connect them with Arabian Sea and estuaries.
View question detailsEstuaries form at the mouths of these rivers. Exam tip: remember the relation between west-flowing rivers and estuaries.
View question detailsQUIZ COMPLETE