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Answered 2010-02-27 22:26:09
Frost wedging occurs when liquid water flows into rock cracks and crevices and then expands upon freezing. The wedging creates a deeper or larger crack which can then be further expanded by additional frost wedging. Additionally, the frost wedging creates additional rock surface which can then be attacked by chemical weathering, mainly by the natural acidity of rainwater.
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How does the freezing and thawing cause weathering of rocks?
because it cracks the rock
Is ice freezing in a crack of a rock considered weathering or erosion?
Ice freezing in a crack of a rock is considered weathering.
What type of climate has the greatest amount of rock weathering caused by frost action?
A wet climate in which temperatures alternate between below freezing and to above freezing.
Does freezing then thawing a mechanical weathering of a rock?
Yes, it is a form of mechanical weathering. Water manages to get into a crack in a rock, and with cold temperatures, freezes. When transferring from a liquid to a solid, the molecules of water expand by crystallization, widening the crack in the rock.
What is water freezing in the crack of a rock an example of?
Water freezing in the cracks of rock is an example of Mechanical Weathering also referred to as Physical Weathering.
Is water freezing in cracks in a rock a physical weathering?
it is a physical weathering.
What are two ways the mechanical weathering changes rocks?
Mechanical weathering is any type of rock break down or change that is not caused by a chemical change in the rock structure. It can be caused by freezing and thawing of water in the rock or hotter temperatures making the rock expand and crack.
What factors cause mechanical weathering?
Mechanical weathering breaks rock into pieces by freezing and thawing,release of pressure, growth of plants, action of animals, and abrasion
Which of theses can cause the expansion and contraction of rocks due to weathering?
Warming during the day, will expand the rock. Freezing during the night, will contract the rock.
Can ice cause physical weathering?
Yes. Ice causes physical weathering by gring rock with abrasion or by freezing and thawing when ice is stuck in rock it expands putting a larger crack in the rock and when it thawes the water goes down the rock and erodes it.
What is the breaking up of rock by freezing and thawing called?
Weathering
How does freezing water cause physical weathering of rock?
Water expands when it freezes and becomes ice. If water seeps into cracks into a rock and then freezes, it may crack the rock or weaken it.
The alternate freezing and thawing of soil and rock is called?
The alternate freezing and thawing of soil and rock is called freeze thaw weathering.
How can chemical weathering change a rock?
chemical weathering can change a rock by the water freezing inside the roclk and the crease of the rock breaking by the frozen water inside of it.
Is freezing and thawing mechanical or chemical weathering?
Freeze/thaw cycles are an example of mechanical weathering of rock.
What is water freezing in a rock and cracking it called?
Frost action; a form of mechanical weathering of rock.
What is the effect of freezing temperatures on rocks?
This process is called weathering. Very cold temperatures cause any water in the cracks of the rocks to freeze and expand which puts pressure on the rocks. The water thaws when the temperature rises. Repeating this process over and over will eventually undermine the strength of the rock causing it to crumble.
Water seeping into the joints or seams of a rock and then freezing can weather the rock. This is an example of what type of weathering?
I'm pretty sure it's chemical weathering!
Do plants cause the weathering of rocks?
Plants can contribute to the weathering of rock.
How does freezing water cause rocks to weathering?
Water seeps into cracks and crevasses and pores. When water freezes it expands causing the rock to break down.
How does weathering release phosphate from a rock?
Chemical weathering and physical weathering are two types of weathering involved in the phosphorus cycle. In chemical weathering, a chemical reaction causes phosphate rocks to break down and release phosphate into soil. Acid precipitation and the chemicals released by lichen can cause the chemical weathering. In physical weathering, processes like wind, rain, and freezing releases particles of rock and phosphate into the soil.
Classify freezing or thawing oxidation water dissolving chemicals in rock abrasion acid rain?
Freezing or thawing are classified as mechanical weathering. Water dissolving and oxidation of chemicals in rock acid rain are classified as chemical weathering.
What things causes a rock to erode?
Weathering, wind, rain, extreme temperatures.
How does freezingwater cause the weathering of rocks?
Water can get into fractures/joints/pores of rock, freeze, and then expand, weathering the rock.
In environments where water is readily available and temperatures drop below freezing for some part of the day what physical weathering process is likely to be significant?
In this environment frost shattering or frost wedging is a significant weathering process. The water in the pores in the rock freezes at night and the ice expands as this happens forcing small cracks in the rock to widen and the rock to shatter.
