PHYSIOLOGY OF INDIA
INDIAN PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A rift valley is formed mainly due to: [NDA 2003]
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forces of tension in the earth’s crust
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the subsidence of the floor of a river valley
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the valley formed after the formation of fold mountains
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the deepening of a valley by ice action
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Explanation:
Detailed explanation-1: -Rift valleys form when tectonics plates beneath the Earth’s surface diverge (or move away from one another in opposite directions). It is important to note here that rift valley formation, unlike rivers and glacial valleys, are solely created as a result of tectonic plate movement.
Detailed explanation-2: -A rift valley is a lowland region that forms where Earth’s tectonic plates move apart or rift. Faulting due to divergence creates the rift system. Continental rifts are potential places where new oceans are expected to form.
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