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Which one of the following is a source of chemical weathering a The abrasion of running water b Water freezing in the cracks of exposed rocks?
b. water freezing in the cracks of exposed rocks
Is water freezing in cracks in rocks physical or chemical weathering?
Water freezing in cracks in rocks is a physical weathering process. As water expands when it freezes, it exerts pressure on the rock, causing the cracks to widen and eventually break apart. This process is known as frost wedging and is a common form of mechanical weathering.
Frost wedging is a form of Chemical Mechanical or Biological weathering?
Frost wedging is a form of mechanical weathering caused by the repeated freezing and thawing of water in cracks in rocks.
Which one of the following is a source of chemical weathering a The abrasion of running water b water freezing in the cracks of exposed rocks c the effects of acid from decaying animals d the growth?
C. The effects of acid from decaying animals
How do cracks get wider in limestone?
Cracks in limestone can widen due to a combination of factors, such as physical weathering from water freezing and thawing, chemical weathering from acidic rainwater, and biological weathering from roots growing and expanding within the cracks. Over time, this continuous process of erosion can cause the cracks to widen significantly.
Is freezing and thawing classified as chemical weathering or mechanical weathering?
Freezing and thawing is classified as a type of mechanical weathering, specifically known as frost wedging. This process occurs when water seeps into cracks in rocks, freezes and expands, causing the rock to break apart over time.
How does physical weathering make the job easier for chemical weathering?
Physical weathering, such as cracks, creates more surface area for chemical weathering to occur on.
Is frost wedging related to chemical weathering?
No, frost wedging is a physical weathering process caused by the expansion of freezing water in cracks and crevices of rocks. Chemical weathering involves the breakdown of rocks through chemical reactions rather than physical forces like frost.
Is water freezing in cracks in a rock a physical weathering?
Yes, water freezing in cracks in a rock is a form of physical weathering called frost wedging. As water freezes, it expands, putting pressure on the rock and causing it to break apart over time.
How does mechanical weathering increase the effectiveness of chemical weathering process?
Mechanical weathering breaks down rocks into smaller pieces, increasing their surface area exposed to chemical weathering agents like water and acids. This increased surface area allows for more efficient chemical reactions to occur, accelerating the chemical weathering process. Additionally, mechanical weathering can create fractures and cracks in the rock, providing pathways for chemical weathering agents to penetrate deeper into the rock, further enhancing the weathering process.
How are mechanical and chemical weathering affected by plants?
to be honest in mechanical weathering plants grow their roots in the cracks of rocks. In chemical weathering plants grow their roots in the cracks of rocks, and the roots release acid that weathers away the rock.
Is freeze thaw chemical weathering?
No. Chemical weathering is to do with acidic rain. This is a type of physical weathering, where it isn't the rainwater's ph, but the fact it freezes in cracks, expands, and prises the rock apart(creating a broken skyline or a scree slope). It occurs in damp areas where water is sometimes, not always below freezing.
