Which of the following illustrates mechanical weathering?
A. Carbonic acid weathers marble limestone
B.As plants grow, they produce weak acids that slowly dissolve rock
C.Oxidation causes weathering in rock
D.Repeated freezing and thawing in rocks causes weathering
Is the answer D? Any help would be great, thank you!
Oh, would it be A?
Ok, So I know it is not A or C... So it comes down to B and D....
Only one of your two answers is about physical rather than chemical weathering.
so which one is it
the answer would be D i took the test
Yes, the correct answer is D. Repeated freezing and thawing in rocks causes weathering. To arrive at this conclusion, we can examine each option and determine which one illustrates mechanical weathering.
A. Carbonic acid weathers marble limestone: This option describes chemical weathering rather than mechanical weathering. Chemical weathering involves the breakdown of rocks through chemical reactions, while mechanical weathering refers to the physical breakdown of rocks into smaller fragments.
B. As plants grow, they produce weak acids that slowly dissolve rock: Again, this option describes chemical weathering caused by the weak acids produced by plants.
C. Oxidation causes weathering in rock: Oxidation is a chemical process in which a substance combines with oxygen. This option also describes chemical weathering, not mechanical weathering.
D. Repeated freezing and thawing in rocks causes weathering: This option accurately describes mechanical weathering. When water seeps into cracks in rocks and freezes, it expands and exerts pressure on the rocks, causing them to break apart. This process is called frost wedging and is an example of mechanical weathering.
Therefore, the correct answer is D, as you correctly identified.