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Subjects

Geography

Lakes

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.

Hard · Level 3 · 25 questions

Practice questions

01What is the main basis for considering Sambhar Lake an inland saline lake?

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02Which process is most necessary for the formation of an oxbow lake?

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03Why is Chilika Lake called a lagoon rather than an ordinary freshwater lake?

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04Which option correctly gives the water type and location of Wular Lake?

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05Which result is most likely when siltation increases in a lake?

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06The presence of phumdis in Loktak Lake shows which feature?

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07Why is Gobind Sagar Lake considered an artificial reservoir rather than a natural lake?

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08Why can a coastal lagoon contain a mixture of saline and fresh water?

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09What is the correct geographical classification of Pulicat Lake?

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10Which problem can increase due to eutrophication in lakes?

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11Which lake is considered linked with a crater formed by meteorite impact?

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12Which match is correct for understanding the location of Kolleru Lake?

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13Vembanad Lake is most associated with which geographical landscape?

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14What is the most logical reason for seasonal fluctuation in lake water level?

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15What effect can deforestation in a lake catchment have on the lake?

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16What can be the most serious combined effect of increasing pollution and siltation in lakes?

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17What risk increases when population pressure rises around freshwater lakes?

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18Which cause is most suitable for understanding the origin of glacial lakes?

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19What is the correct reason for linking lakes with wetland conservation?

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20In which situation can the economic use of a lake become harmful to the environment?

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21Which is the correct difference between a coastal lagoon and an inland saline lake?

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22Why is protecting the catchment area considered a main measure in lake conservation?

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23What is common between Vembanad and Pulicat lakes?

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24Fish farming in lakes will be sustainable only under which condition?

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25What can be the most serious geographical effect of encroachment around lakes?

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