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Weathering and Soils

Surface Processes Part 1

TermDefinition
Weathering The breakdown of rock at or near the Earth's surface (air, water, actions of living things)
Sediments Smaller pieces of rock that have undergone weathering
Chemical Weathering The breakdown of rock through a change in mineral or chemical composition
Oxidation When iron combines with oxygen to make rust
Sinkhole A natural depression in a land surface formed by the dissolution and collapse of a cavern roof
Physical Weathering The breakdown of rock into smaller pieces without chemical changes
Abrasion Occurs when rock particles grind against rock
Characteristics Round shaped rocks (sediments are moved by ice, running water, gravity, or air)
Frost Action Weathering process caused by cycles of freezing and thawing of water in rock openings
Infiltration The process which water penetrates into soil or rock
Plant Root Growth As plants grow they can also spread cracks even farther
Abrupt Temperature Changes As temperature increases rocks expand and fracture
Humus Part of the soil that serves as a source of plant nutrients
Created by: cmbinder197
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