GK
WORLD GEOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Physical weathering is when ____
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Large masses of rock are melded together through volcanoes
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Large masses of rock are broken into smaller pieces
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Chemicals slowly break down rocks over many years
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Wind and rain blow dirt away from rocks
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Explanation:
Detailed explanation-1: -Rocks and minerals are fragmented by mechanical processes. There is no change of their chemical composition. Physical weathering transforms a large mass of rock into smaller pieces which are more easily transported and eroded.
Detailed explanation-2: -Mechanical weathering breaks rocks into smaller and smaller pieces but without otherwise altering the minerals. In chemical weathering minerals are changed into new minerals and mineral byproducts. Some minerals like halite and calcite may dissolve completely.
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