Question

The freezing and thawing action of water affects a rock by?

Answer 1

It's a form of weathering. If water gets into a crack in a rock and then freezes, it will expand, causing the crack to get bigger, which can happen continuously.

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Answer 2

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ANSWER:

Water seeps into cracks in rocks, freezes, then expands (since ice occupies a slightly larger volume than liquid water). This expansion pushes the sides of the cracks further apart. ... Rocks can slowly break down by a mechanism known as freeze-thaw weathering, or alternatively, frost wedging.