FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is the correct order of weathered rocks from largest to smallest?
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clay, silt, sand, gravel
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sand, silt, clay, gravel
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gravel, sand, silt, clay
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gravel, sand, clay, silt
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Explanation:
Detailed explanation-1: -Soil is formed from weathered rocks which have gravel, fine and coarse sand, silt and clay. The largest particle is gravel, and the smallest one is clay.
Detailed explanation-2: -The words arranged according to increasing order of their particle size would be: Clay < Silt < Sand < Gravel < Rock.
Detailed explanation-3: -If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock. Clastic sedimentary rocks may have particles ranging in size from microscopic clay to huge boulders. Their names are based on their clast or grain size. The smallest grains are called clay, then silt, then sand.
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