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28 Cards in this Set
- Front
- Back
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all chemical and physical processes that break down rock on the earth's surface
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weathering
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process of water, ice, wind or gravity moving wethered rock or soil
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erosion
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loose rock particles that have been moved by erosion
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sediments
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process in which sediments are layed down in new locations
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deposition
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type of weathering in which rock is physically broken down into smaller pieces
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mechanical weathering
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process that splits rock when water seeps into cracks then freezes and expands
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ice wedging
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process that breaks down rocks through chemical changes
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chemical weathering
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chemical change in which a substance combines with oxygen
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oxidation
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a mixture of air pollution and rain water
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acid rain
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CO2 that has been mixed with rain wter to form acid rain
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carbonic acid
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limestone disolved by acid rain that forms an uoside down cone on the celing of an underground cave
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stalactite
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limestone disolved by acid that forms a cone building upward on the floor of an underground cave
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stalagmite
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thinnest rock particles made from the weathering of larger rocks
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sand
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loose weathered rock material on the earths surface to which organic matter has been added
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soil
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dark colored decay of organic matter in soil
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hummus
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a layer of soil that differs in color or texture from the layers above or below it
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soil horizon
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mixture of hummus clay and other minerals that forms the crumbly top layer of the soil
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topsoil
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layer of soil beneath the top soil that contians mostly clay and minerals
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subsoil
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third layer of soil
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parent material
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completely unweathered rock at the bottom of the earth's soil
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bedrock
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water flowing over the earth's surface as a result of rainfall or melting snow and ice
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runoff
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rock that is full of tiny connected air spaces that water can seep through
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permiable rock
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any water that is underground
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ground water
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underwater rock layer that is filled with water between the rocks
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aquifer
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area in the ground where surface land has caved into an underground cavity due to removal of water
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sinkhole
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huge masses of ice and snow on land
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glaciers
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long staight line effect left on rocks by glaciers moving over them
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glacial striatations
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deposit of wind blown sand
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sand dume
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