When the grains of sand are very fine and light, the wind can carry it over very long distances. When such sand is deposited in large areas, it is called ______.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. loess.
Loess is a fine, wind-deposited sediment composed primarily of silt and clay. It is commonly found in flat areas like the Loess Plateau in China and parts of the Great Plains in the U.S. Loess is highly fertile and is important for agriculture but is also vulnerable to erosion due to its loose structure.
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Stacks: These are large, vertical rock formations often found near coastlines. They are created through erosion, leaving behind isolated rock columns.
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Moraines: These are piles of rock debris (such as gravel and sand) left behind by a moving glacier. They typically form at the glacier's edges or along its path.
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Mushrooms: This refers to the fungus that grows in damp environments and does not relate to wind-deposited sediments.
In summary, loess is the correct answer, a wind-formed deposit, while the other terms relate to geological formations and organisms.