Geography
Melting of ice in polar regions has increased which type of weathering?
- Mechanical
- Chemical
- Biological
- All of them
Weathering
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Answer
Chemical
Reason — The melting of ice provides more liquid water, which promotes chemical weathering. In polar regions, meltwater contains dissolved carbon dioxide, forming weak carbonic acid, which accelerates the chemical decomposition of rocks.
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Related Questions
Assertion (A): Weathering is described as disintegration or decomposition of a rock in size by natural agents at or near the surface of the earth.
Reason (R): A rock undergoes disintegration or decomposition only by being exposed.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R does not explain A.
- A is true but R is false.
- A is false but R is true.
Given below are different climate types with the predominant weathering action. Select which one is incorrect.
(A) Equatorial Climate — Chemical weathering
(B) Tropical Climate — Chemical weathering
(C) Dry Climate — Biological weathering
(D) Temperate Climate — Mechanical weathering
(E) Polar Climate — Mechanical weathering- B
- C
- D
- E
What is weathering?
Name three types of weathering.