GK
WORLD GEOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Wind abrasion of rocks
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Minerals dissolving into solution
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Oxidation in the atmosphere
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Alternate freezing and melting of water
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Detailed explanation-1: -Cycles of freezing and thawing (the weather becomes warmer and causes snow and ice to melt) cause frost weathering. It is most effective at high elevations in mid-latitude where freezing and melting is often repeated.
Detailed explanation-2: -Physical weathering process does not change the chemical and mineralogical composition from that of the parent rock, and it is more common near the ground surface.
Detailed explanation-3: -Ice wedging This refers to the repeated freezing and melting of water within small crevices in the rock surface. This expansion and contraction is also a major cause of potholes in streets. Water seeps into cracks in the rocks, and, as the temperature drops below freezing, the water expands as ice in the cracks.
Detailed explanation-4: -Water is often the main cause of weathering, either as rain or ice. Rainwater can easily enter cracks in rocks or sidewalks.