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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.

Expert · Level 6 · 24 questions

Practice questions

01Compared with lakes, how is the movement of river water generally?

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02The importance of bird sanctuaries associated with lakes is linked with what?

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03The unsuitability of saline lake water for drinking is linked with which reason?

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04Which statement best explains the relation between lakes and drainage systems?

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05If a lake has no external outlet, with which type of drainage is it appropriate to associate it?

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06Which problem may increase due to excessive spread of water hyacinth in lakes?

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07Which clue is more useful in identifying tectonic lakes?

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08Why can salinity vary in lagoon lakes?

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09Which option gives a correct lake conservation measure?

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10What effect can shrinking lakes have on local society?

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11Why is it useful to study lakes in connection with wetlands?

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12Which natural action can mainly contribute to the formation of coastal lagoon lakes?

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13When lake water quality declines, which area may be affected first?

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14Seasonal fluctuation in lake water level may be most related to what?

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15Which statement correctly shows the multipurpose importance of lakes?

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16If an area has many lakes, what care should be taken in local map study?

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17Which measure is more effective to reduce sediment deposition in lakes?

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18Which classification is most useful while studying the origin of lakes?

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19What is the most reliable basis to distinguish lagoon, oxbow and tectonic lakes?

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20Why can the effect of pollution remain longer in lakes due to stagnant water?

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21In which condition can a lake help in local groundwater recharge?

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22Why can the impact of landslides be serious in mountain lakes?

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23Under which condition can a lake act as a natural sedimentation area for a river?

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24If the outflow of a lake is controlled what can be its main use?

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