The science that deals with the earth's physical structure and substance, its history, and the processes that act on it.
The study of the physical features of the surface of the earth and their relation to its geological structures.
The removal of a covering or surface layer.
The process of eroding or being eroded by wind, water, or other natural agents.
the breaking down of rocks, soils and minerals as well as artificial materials through contact with the Earth's atmosphere, biota and waters.
also known as slope movement or mass movement, is the geomorphic process by which soil, regolith, and rock move downslope under the force of gravity.
The breakup of a body of rock into smaller rocks of the same type.
The decompostition and alteration of rocks due to chemical actions of natural physical and biological processes. Ex: Red soil means Iron is present and has "rusted"
Controls of weathering
Properties of parent rock, Varies minerals weather at different rates, and A rocks structure affects its susceptibility to cracking and fragmentation. As well as: climate, soil, and time.
expansions and contraction of wather in rock cracks due to freezing and thawing.
the tendency of matter to change in volume in response to a change in temperature
the growth of salt crystals. When saline water seeps into cracks and evaporates depositing salt crystals, the rocks are then heated up the crystals will expand putting pressure on the surrounding rock which will splinter the stone in to fragments.
successive layers of a large plutonic rock break loose and fall when the erosion of overlying material permits the rock to expand upward.
strong enough to loosen sediment along the river bed and banks this will take rocks from the side of the banks and add it to the rivers loads.
a chemical weathering process that results in the decompostition of silicate molecules within rock through the reaction of hydrogen and hydroxyl ions in water.
a form of chemical weathering in which oxygen chemically combines with metallic iron to form iron oxides resultin in the loss of electrons.
a type of chemical weatherin caused by rainwater that has absorbed atmospheric carbon dioxide and formed a weak carbonic acid that slowly disolves rock.
A number of plants and animals may create chemical weathering through release of acidic compounds, i.e. moss on roofs is classed as weathering. Mineral weathering can also be initiated and/or accelerated by soil microorganisms.
quantities of rock falling freely from a cliff face
the gradual downhill movement of soil, trees, and rocks due to the force of gravity.
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