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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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Expert · Level 38 · encroachment,water withdrawal,lake shrinkage
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  1. Both lake area and water volume can decrease
  2. The lake will always become larger and deeper
  3. Biodiversity will automatically increase
  4. Pollution will end
Expert · Level 38 · dal lake,tourism management,conservation
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  1. Uncontrolled tourism can increase waste and water pollution
  2. Tourism always makes a lake disappear
  3. Tourism has no relation with water
  4. Tourism makes all rivers flow backward
Expert · Level 38 · lake matching,wular,wrong pair
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  1. Sambhar Rajasthan saline lake
  2. Loktak Manipur phumdis
  3. Vembanad Kerala backwater
  4. Wular Kerala salt production
Expert · Level 38 · heavy metals,food chain,lake pollution
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  1. Accumulation of toxic substances in the food chain
  2. Immediate cleaning of the lake
  3. Disappearance of all sediment
  4. Stopping of evaporation
Expert · Level 38 · shore construction,urbanisation,drainage blockage
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  1. It can block small drains and inflow paths
  2. It blocks the Sun
  3. It turns every lake into a glacier
  4. It turns the sea into a mountain
Expert · Level 38 · fisheries,habitat loss,water quality
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  1. When water quality worsens and habitats are destroyed
  2. When clean water remains available
  3. When shore plants remain protected
  4. When pollution sources are stopped
Expert · Level 38 · sustainable management,recharge,water use
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  1. Control water use and increase recharge
  2. Withdraw all water at once
  3. Dump waste into the lake
  4. Fully concrete the shore
Expert · Level 38 · lake formation,wular,tectonic
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  1. Tectonic activity and Wular
  2. River meander and Wular
  3. Salt production and Dal
  4. Phumdi and Sambhar
Expert · Level 38 · wetland,lake importance,livelihood
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  1. They also support birds organisms nutrient cycles and local livelihood
  2. They only store stones
  3. They never provide habitat to organisms
  4. They always remain completely dry
Expert · Level 38 · sedimentation,human impact,deforestation
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  1. Human deforestation and construction can also increase sediment
  2. Sediment is never linked with humans
  3. All sediment comes from the sea
  4. Sediment always improves water quality
Expert · Level 38 · chemical pollution,nutrient pollution,lake quality
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  1. Chemical pollution is linked with toxic substances and nutrient pollution with excess nitrogen phosphorus
  2. Both are only sunlight
  3. Both always form glaciers
  4. Neither relates to water quality
Expert · Level 38 · loktak,phumdi,livelihood
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  1. It is only a desert saltwater lake
  2. It is a dynamic lake linked with floating phumdis and aquatic livelihood
  3. It is only a tectonic lake of Kashmir
  4. It is merely a seacoast lagoon
Expert · Level 38 · climate change,lake indicators,water level
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  1. Their water level temperature and biological conditions can be affected by climate change
  2. They are completely separate from climate
  3. They always remain stable and unchanged
  4. They exist only on maps
Expert · Level 38 · fish death,eutrophication,dissolved oxygen
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  1. Dissolved oxygen becomes very low after algal decomposition
  2. Only clean rainfall occurs
  3. Trees grow on the shore
  4. Clean river water enters
Expert · Level 38 · community participation,lake conservation,sustainable use
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  1. Local people can help prevent pollution monitor and use sustainably
  2. Local people always only damage lakes
  3. Community has no relation with water
  4. Lake conservation is possible only by satellite
Expert · Level 38 · siltation,soil conservation,solution
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  1. Siltation and soil conservation in catchment
  2. Pollution and dumping waste
  3. Encroachment and filling shores
  4. Eutrophication and increasing nutrient waste
Expert · Level 38 · biodiversity assessment,water quality,habitat
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  1. Water quality habitat condition pollution sources and water level
  2. Only size of the Sun
  3. Only mountain height
  4. Only average depth of oceans
Expert · Level 38 · vembanad,kerala,tourism
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  1. Vembanad Lake
  2. Sambhar Lake
  3. Wular Lake
  4. Loktak Lake
Expert · Level 38 · importance of lakes,water resources,biodiversity
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  1. They are linked with water resources biodiversity climate moderation livelihood and risk control
  2. They are only recreation sites
  3. They are only sources of saline water
  4. They are unrelated to drainage systems
Expert · Level 38 · lake management,integrated conservation,sustainable use
View options
  1. Waste treatment catchment protection encroachment control and regulated water use
  2. Only increasing tourism and ignoring pollution
  3. Taking out all water immediately
  4. Dumping waste to create land

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