Which of the following is not a process of physical weathering?

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Multiple Choice

Which of the following is not a process of physical weathering?

Explanation:
Physical weathering breaks rocks into pieces without changing their chemical makeup. Frost action splits rock as water seeps into cracks, freezes, and expands, pushing the cracks open. Abrasion wears surfaces down when particles carried by wind or water grind against them, and wind can cause this mechanical wearing by blasting rock with sand. Dissolution, however, is chemical weathering: minerals dissolve in water or react chemically to form new substances, changing the rock’s composition rather than just its size. So the process that is not physical weathering is dissolution.

Physical weathering breaks rocks into pieces without changing their chemical makeup. Frost action splits rock as water seeps into cracks, freezes, and expands, pushing the cracks open. Abrasion wears surfaces down when particles carried by wind or water grind against them, and wind can cause this mechanical wearing by blasting rock with sand. Dissolution, however, is chemical weathering: minerals dissolve in water or react chemically to form new substances, changing the rock’s composition rather than just its size. So the process that is not physical weathering is dissolution.

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