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Repeated freezing and thawing of water in cold mountain regions increases what?

Answer and explanation

Correct answer: Frost wedging of rocks

Water enters cracks in rocks and expands when it freezes. This expansion exerts pressure on the crack walls; repeated freezing and thawing progressively widens the cracks and breaks the rock. This physical weathering process is called frost wedging. Marine deposition involves the settling of sediments in water bodies, so it is not related to this process. Exam tip: If water freezes and expands in rock cracks, identify freeze-thaw or frost wedging.

Related tags

Freeze-Thaw WeatheringFrost WedgingPhysical WeatheringGeomorphic ProcessesMountain RegionsRock WeatheringWeathering: PhysicalChemicalAnd BiologicalWeathering Physical Chemical And Biological

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