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.
Practice questions
Which option most clearly shows the drainage role of lakes?ExpertLevel 39In which situation can a lake also become a risk for human settlements?ExpertLevel 39What effect may occur in a local area if lakes dry up?ExpertLevel 39If a question calls a lake a natural reservoir what does it mean?ExpertLevel 39Which example most correctly matches lake location and type?ExpertLevel 39What problem can occur when nutrients increase excessively in lakes?ExpertLevel 39While writing the importance of lakes in a long answer which group is most complete?ExpertLevel 39Why is it incomplete to consider a lake only as a standing water body in a river system?ExpertLevel 37Which statement is most correct about the origin of Wular Lake?ExpertLevel 37Which is the most suitable process for the formation of an oxbow lake in a river floodplain?ExpertLevel 37Which option most clearly states the geographical importance of Sambhar Lake?ExpertLevel 37Which is the most scientific reason for the contribution of lakes to flood control?ExpertLevel 37The origin of many lakes in the Himalayan region may be linked with which process?ExpertLevel 37If a lake is connected with a river channel, what can be its main benefit in the dry season?ExpertLevel 37How can the effect of mountain lakes like Nainital on local climate be understood?ExpertLevel 37Why is a saline lake more likely to form in a closed inland drainage basin?ExpertLevel 37Which statement is most suitable for understanding lakes as ecosystems?ExpertLevel 37On what basis can a coastal lagoon and a river oxbow lake be mainly differentiated?ExpertLevel 37Heavy silt filling in a lake indicates which long-term change?ExpertLevel 37Why should the tourism importance of lakes not be limited only to scenic beauty?ExpertLevel 37