The highly eroded and lower form of the Aravalli Mountains indicates what?
Answer and explanation
Correct answer: Their very old age
Mountain relief provides evidence about geological history. A mountain system that has existed for a very long time is exposed repeatedly to weathering, running water, wind, and other erosional agents. These processes gradually lower peaks, widen valleys, and make slopes more rounded and irregular. The Aravalli Mountains show this worn-down and relatively low relief, so option A, their very old age, is correct. A newly formed glacial range would not normally display such prolonged erosion. The Aravallis are not identified as marine coral mountains, and a low eroded profile certainly does not prove complete snow cover. The conclusion comes from linking present landform appearance with the duration of erosion.
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What is the correct answer to this question?
Their very old age
Why is this the correct answer?
Mountain relief provides evidence about geological history. A mountain system that has existed for a very long time is exposed repeatedly to weathering, running water, wind, and other erosional agents. These processes gradually lower peaks, widen valleys, and make slopes more rounded and irregular. The Aravalli Mountains show this worn-down and relatively low relief, so option A, their very old age, is correct. A newly formed glacial range would not normally display such prolonged erosion. The Aravallis are not identified as marine coral mountains, and a low eroded profile certainly does not prove complete snow cover. The conclusion comes from linking present landform appearance with the duration of erosion.
Which subject and chapter does this question cover?
This is a Class 10 General Knowledge question. Chapter: Indian Geography. Topic: Mountains and Plateaus of India.
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