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Subjects

Geography

Role of Rivers

नदियों की भूमिका

In Class 9 Geography, this topic from the chapter “Drainage” explains how rivers shape the land through erosion, transportation and deposition. Students learn how river systems and drainage patterns influence plains, valleys, agriculture, settlements, transport and the availability of water. The topic also highlights the importance of rivers in human life, along with challenges such as pollution, floods and the need for careful conservation and management of river resources.

TOPIC PRACTICE

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Up to 20 questions from this page. Select your focus, then start.

20 questions

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Hard · Level 43 · geography,drainage,rivers
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  1. High slope gives greater flow energy
  2. Low slope increases deposition
  3. Sea tides push the river backward
  4. The river has no sediment
Hard · Level 43 · geography,drainage,rivers
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  1. Erosion will become very fast
  2. Deposition will increase
  3. The river will completely evaporate
  4. The source will turn into sea
Hard · Level 43 · geography,drainage,rivers
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  1. They are formed only of rocks
  2. They always block water
  3. They repeatedly receive new alluvial layers
  4. They end rainfall
Hard · Level 43 · geography,drainage,rivers
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  1. Water remains still there
  2. Sediment always deposits there first
  3. River velocity is low there
  4. Flow velocity and energy are higher there
Hard · Level 43 · geography,drainage,rivers
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  1. Deposition of heavier particles on banks during floods
  2. Removal of river water by wind
  3. Deposition of sea salts at the source
  4. Groundwater rising and becoming ice
Hard · Level 43 · geography,drainage,rivers
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  1. It tells the colour of a river
  2. It helps identify boundaries of different drainage basins
  3. It makes the river saline
  4. It turns the sea into a river
Hard · Level 43 · geography,drainage,rivers
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  1. Low sediment and very strong tides
  2. The river ends at its source
  3. The river brings high sediment and deposits it at the mouth
  4. The river becomes completely underground
Hard · Level 43 · geography,drainage,rivers
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  1. Because slope is low and lateral erosion is stronger
  2. Because water always freezes
  3. Because the river flows only at the source
  4. Because the sea ends the river
Hard · Level 43 · geography,drainage,rivers
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  1. Only religious belief
  2. Combination of water fertile land transport and livelihood
  3. Only height of mountains
  4. Only desert climate
Hard · Level 43 · geography,drainage,rivers
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  1. Storage capacity of the reservoir may reduce
  2. The reservoir will always become larger
  3. The reservoir will become a sea
  4. Rainfall will be created in the dam
Hard · Level 43 · geography,drainage,rivers
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  1. Drainage becomes cleaner
  2. Water quality and aquatic ecology deteriorate
  3. All floods stop
  4. River slope increases
Hard · Level 43 · geography,drainage,rivers
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  1. Vertical erosion
  2. Water evaporation
  3. Sediment deposition
  4. Glacier formation
Hard · Level 43 · geography,drainage,rivers
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  1. Pressure on groundwater and ecology may increase
  2. The downstream area will automatically get more water
  3. All sediment will reach the sea
  4. The floodplain will immediately become a mountain
Hard · Level 43 · geography,drainage,rivers
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  1. It can increase soil erosion and silt load making the river shallow
  2. It always purifies river water
  3. It changes the source into sea
  4. It turns the river into a volcano
Hard · Level 43 · geography,drainage,rivers
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  1. Waterfall
  2. Meander
  3. Glacier
  4. Volcanic cone
Hard · Level 43 · geography,drainage,rivers
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  1. Carrying water to dry and distant fields
  2. Ending all rivers
  3. Turning river into minerals
  4. Making sea water drinkable
Hard · Level 43 · geography,drainage,rivers
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  1. Harsh climate and water scarcity
  2. Availability of water fertile soil flat land and employment
  3. Only high mountains and snow
  4. Absence of any natural resource
Hard · Level 43 · geography,drainage,rivers
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  1. When depth is sufficient and flow is regular
  2. When there is much shallowness and obstacles in the course
  3. When the river is wide and calm
  4. When there is connection with a port
Hard · Level 43 · geography,drainage,rivers
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  1. They only make water saline
  2. They cut the land and create new surfaces
  3. They stop clouds
  4. They reduce solar energy
Hard · Level 43 · geography,drainage,rivers
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  1. Ecology of the mouth and downstream area may be affected
  2. River length will automatically double
  3. Sea water will become completely fresh
  4. The river will never have sediment