Question

how does mechanical weathering occur give two examples ?​

Answer 1

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Mechanical weathering breaks down existing rocks and minerals. Mechanical weathering keeps the chemical makeup of materials the same. Ice wedging, abrasion, and some actions of living organisms and humans bring about mechanical weathering.

Mechanical weathering involves mechanical processes that break up a rock: for example, ice freezing and expanding in cracks in the rock; tree roots growing in similar cracks; expansion and contraction of rock in areas with high daytime and low nighttime temperatures; cracking of rocks in forest fires, and so forth.

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Answer 2

Answer:

Form of mechanical weathering that occurs whenever one rock hits another. Water enters a crack, expands as it freezes, and wedges the rock apart. Weathering that breaks rocks into smaller pieces without altering . for example, ice freezing and expanding in cracks in the rock; tree roots growing in similar cracks; expansion and contraction of rock in areas with high daytime and low nighttime temperatures; cracking of rocks in forest fires, and so forth.