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
What conclusion is suitable when encroachment and water withdrawal occur together in lakes?ExpertLevel 38Why is tourism management necessary for Dal Lake conservation?ExpertLevel 38Which lake has both state and main identity given incorrectly?ExpertLevel 38What can be the most concerning effect of heavy metal pollution in lake water?ExpertLevel 38Why can shore construction obstruct natural water flow in lakes?ExpertLevel 38Under which condition can fish resources in a lake decline?ExpertLevel 38If recharge is low and water use is high what should be the first goal of sustainable management?ExpertLevel 38Which option gives the most suitable relation between lake formation process and example?ExpertLevel 38Why is the importance of lakes as wetlands not limited to water storage?ExpertLevel 38Why is it incomplete to treat lake sedimentation only as a natural problem?ExpertLevel 38How can chemical pollution and nutrient pollution in lakes be distinguished?ExpertLevel 38Which analysis best explains the uniqueness of Loktak Lake?ExpertLevel 38Why can lakes be considered sensitive indicators in climate change studies?ExpertLevel 38In which situation can fish death in a lake be linked with eutrophication?ExpertLevel 38Why is the role of community important in lake conservation?ExpertLevel 38Which option gives a correct pair of lake problem and solution?ExpertLevel 38If biodiversity of a lake is declining which combined assessment will be most useful?ExpertLevel 38Which lake is linked with Kerala in the wider context of coastal water and navigation tourism?ExpertLevel 38Which is the most mature conclusion about the multidimensional importance of lakes?ExpertLevel 38Which policy would be most balanced in lake management?ExpertLevel 38