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Subjects

Geography

Lakes

झीलें

In Class 9 Geography, the topic “Lakes” explains how these water bodies form part of the drainage system and differ from rivers in their shape, movement, and location. Students learn about natural lakes formed by tectonic activity, glaciers, river courses, and coastal processes, as well as human-made reservoirs. Indian examples such as Wular, Dal, Sambhar, Chilika, and Kolleru help connect ideas with maps and landscapes. The topic also examines how lakes store water, support irrigation, hydropower, fisheries, biodiversity, tourism, and flood regulation.

TOPIC PRACTICE

Quiz this set

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

20 questions

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Hard · Level 40 · catchment,urbanization,lake recharge
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  1. Paved surfaces can reduce infiltration and alter runoff
  2. Paved surfaces always deepen the lake
  3. Paved surfaces remove pollution
  4. Paved surfaces create seas
Hard · Level 40 · chilika lake,birds,biodiversity
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  1. Important wetland habitat and food availability
  2. Complete desert dryness
  3. Coal mining
  4. Glacial peak
Hard · Level 40 · dal lake,srinagar,tourism
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  1. Dal Lake
  2. Sambhar Lake
  3. Vembanad Lake
  4. Kolleru Lake
Hard · Level 40 · lake conservation,catchment,pollution control
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  1. Catchment protection pollution control silt control and regulated use
  2. Dumping waste and increasing encroachment
  3. Releasing wastewater and excessive withdrawal
  4. Cutting shores and removing plants
Hard · Level 40 · lake ecosystem,pollution,habitat damage
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  1. Clean water and regulated use
  2. Pollution excess nutrients and habitat damage
  3. Plantation and silt control
  4. Wastewater treatment
Hard · Level 40 · lake origin,lonar,gobind sagar,oxbow
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  1. Lonar crater Gobind Sagar reservoir and oxbow lake meander cut off
  2. Sambhar glacier Gobind Sagar meander and Chilika crater
  3. Dal sea Pulicat glacier and Loktak desert
  4. Wular dam Sambhar backwater and Vembanad crater
Hard · Level 40 · lake inflow,siltation,water capacity
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  1. Both water volume and effective depth of the lake may decrease
  2. The lake may immediately become an ocean
  3. Glaciers may form in the lake
  4. Lake water may always become cleaner
Hard · Level 40 · catchment management,lake conservation,runoff
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  1. Because runoff silt and pollution from the catchment affect the lake
  2. Because the catchment is unrelated to the lake
  3. Because the catchment is always a sea
  4. Because the catchment immediately makes the lake saline
Hard · Level 40 · eutrophication,algal bloom,fish death
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  1. Oxygen depletion in water due to eutrophication
  2. Water becoming completely glacial
  3. Lake changing into a sea
  4. Controlled plantation on shores
Hard · Level 40 · community participation,lake conservation,sustainable use
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  1. Because local people can help prevent pollution and balance use
  2. Because the community always dries the lake
  3. Because humans have no role in lake conservation
  4. Because the community turns water into stone
Expert · Level 38 · closed basin,inland drainage,saline lakes
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  1. When water outflow does not reach the sea
  2. When water always flows directly into the ocean
  3. When the lake is made only of clouds
  4. When it has no sediment
Expert · Level 38 · chilika,brackish water,coastal lagoon
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  1. Permanent presence of glaciers
  2. Sea connection and freshwater inflow from rivers
  3. Sand accumulation in a desert
  4. Complete stability of the crust
Expert · Level 38 · oxbow lake,meander,river process
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  1. The river directly becomes a sea
  2. A glacier fills the whole valley
  3. The meander neck is cut and the old bend is separated
  4. A sand dune lifts the lake upward
Expert · Level 38 · sambhar,salt production,evaporation
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  1. Continuous snowfall and low temperature
  2. High river outflow and low evaporation
  3. Daily direct entry of the sea
  4. High evaporation and remaining salts
Expert · Level 38 · wular,tectonic lake,kashmir
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  1. Crustal movements formed a depression that could hold water
  2. Sea waves formed a lake in the desert
  3. Wind changed a river into a mountain
  4. Humans formed the lake by a modern dam
Expert · Level 38 · water balance,evaporation,lake level
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  1. Water level will fall and salinity may increase
  2. Water level will always rise
  3. The lake will immediately become a glacier
  4. The river source will change into sea
Expert · Level 38 · catchment,soil erosion,siltation
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  1. The lake always becomes deeper
  2. Siltation increases and reduces lake capacity
  3. Lake water goes into space
  4. Sea temperature becomes zero
Expert · Level 38 · eutrophication,nutrients,algal bloom
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  1. Nutrients decrease then oxygen increases
  2. Glaciers grow then the lake freezes
  3. Nutrients rise then algae grow and oxygen may fall
  4. Sand blows then the sea dries
Expert · Level 38 · loktak,phumdi,aquatic ecology
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  1. Because they are made fully of stone
  2. Because they are desert sand dunes
  3. Because they are permanent glacial blocks
  4. Because they are dynamic floating habitats of vegetation organic matter and water
Expert · Level 38 · lagoon,sandy barrier,coastal lake
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  1. It partly separates the water body from the sea
  2. It raises the Himalayas
  3. It immediately removes all salts
  4. It makes the lake underground

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