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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 1 · 25 questions

Practice questions

01Under which condition is a lake considered part of an inland drainage system?

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02What is the most scientific reason for increasing salinity in lakes like Sambhar?

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03What does it mean to consider Wular Lake a tectonic lake?

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04Which water condition can form in lagoon lakes due to mixing of sea and river water?

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05Which sequential process is most correct in the formation of an oxbow lake?

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06Why can deforestation in a lake catchment increase siltation?

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07What is the most logical effect of siltation on lake water storage?

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08If a coastal lake's connection with the sea becomes partly blocked which change is possible?

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09What is the main reason for considering Chilika Lake important for biodiversity?

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10Why can eutrophication occur when nutrient pollution increases in lakes?

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11The phumdis of Loktak Lake show which complex ecological process?

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12In which condition will drying of a lake be considered human-induced?

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13Which lake is best identified with closed drainage and salt production in Rajasthan?

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14What is the importance of a green buffer around a lake?

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15Why can mountain glacial lakes create a sudden flood risk?

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16What will be the result if dissolved oxygen decreases in a lake?

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17Which relation is most correct for understanding the geography of Vembanad Lake?

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18Through which process can a curved river channel gradually turn into an oxbow lake?

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19The effect of lakes on local climate is linked with which physical property?

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20Which statement correctly distinguishes a coastal lake from an inland saline lake?

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21Which combination is most useful for solving map questions on lakes?

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22Which clue is correct for identifying the geographical location of Kolleru Lake?

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23What can be the most serious geographical result of encroachment in lakes?

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24Which match correctly gives the lake and its main identity?

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25What is the most correct reason for calling a reservoir an artificial lake?

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