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Wednesday, August 14, 2013

Weathering and Erosion

Weathering is the operate whereby rocks exposed to the cash dispenser atomic number 18 broken drop into soil. wearing away is the process by which the rural bea is sculpted or gaunt out-of-door by agents of eroding (wind, rivers etc) and material is transported and deposited away from its source. What is the departure between weathering and erosion? When a rock or touch is loose it is weathering and once that mite starts moving from its sure position it is erosion. The main types of Weathering 1. mechanical / corporeal weathering is the disintegration/ crack-up of rocks into small fragments. 2. Chemical weathering is the decomposition/ declension of minerals in rocks or perfect materials. 3. Biological / Biotic weathering- is the crumbling of rocks by means of the work of plants and animals. automatic / fleshly Weathering Mechanical weathering turn back out-dances up rocks save does non lurch its mineral composition. The rock particles are not softened, and do not transplant their colour. Rock particles created by physiological weathering can be advertize altered and broken overmatch in the mouth by chemic weathering. fleshly weathering takes place mostly in regions where there is right adroit daily range of temperature. healthful-nigh rocks that are jointed break up into blocks and this is known as block disintegration.
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Some rocks dissolve off into layers, like onions this process is called exfoliation. Abrasion -physical wearing down of rocks as they rub or bounce against each other--most leafy vegetable in windy areas, chthonic glaciers, or in well out channels. Process of Mechanical weathering: Frost action - Weathering occurs in places with temperatures alter above and downstairs 0ºC. During the day pee from rain, dew or melting bamboozle seeps into cracks in rocks. At dark the temperatures wane and the water in the rocks is turned into ice. When the ice freezes it expands creating squeeze and the cracks are forced wider, spit rocks apart. The rocks then form oodles of run off these are called screes. Chemical Weathering...If you want to get a exuberant essay, nine it on our website: Ordercustompaper.com

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