A long, winding ridge of stratified sand and gravel is known as:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. esker.
An esker is a long, winding ridge composed of stratified sand and gravel, typically formed by glacial meltwater streams flowing beneath a glacier. As the glacier melts, the sediments carried by these subglacial rivers are deposited in tunnels, which remain as ridges after the glacier retreats.
Eskers are often sinuous (snake-like) and can stretch for several kilometers. They are valuable indicators of past glacial activity and are commonly found in regions that were once covered by glaciers, such as parts of Canada, Northern Europe, and the Arctic.
Other Options:
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Whorl – A spiral or circular pattern, unrelated to landforms.
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Lop – Not a geographical term; usually means to cut off.
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Arch – A curved rock formation formed by erosion, not made of stratified gravel or sand.