Paper 1 · People, Development and Environment
What is the correct order in which you would find stream deposits, starting at the headwaters and going towards the mouth of the river?
AGravel, sand, silt ✓ Correct
BSand, silt, gravel
CSilt, sand, gravel
DNone of the above
Correct answer: (A) Gravel, sand, silt — The correct order is gravel, sand, silt, so that is the answer.
Explanation
★The correct order is gravel, sand, silt, so that is the answer.
★Near the fast headwaters, only heavy gravel settles.
★As the river slows, lighter sand is deposited next.
★Near the calm mouth, the finest silt finally settles.
★So from headwaters to mouth the order is gravel, sand, silt.
★So the answer is gravel, sand, silt.
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