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Weathering / Erosion

TermDefinition
Erosion The process by which natural forces move weathered rock and soil from one place to another.
Mass Movement The movement of large amounts of sediment downhill.
Landslide Rock and soil slide quickly downhill
Slump A mass of rock or soil suddenly slips down a slope in one large mass.
Creep Very slow downhill movement of rock and soil
Mudflow The rapid downhill movement of a mixture of water, rock, and soil.
Weathering The process that breaks down rock and other substances at Earth's surface.
Mechanical Weathering Physically breaking down of rock over time
Alluvial Fan a wide sloping deposit of sediment formed when a stream exits a mountain valley.
Chemical Weathering the process that breaks down rock through chemical changes.
Sediment The material moved by Erosin
abrasion the grinding away of rock by rock particles carried by water, ice, wind, or gravity.
deposition The agents of Erosion lay down the sediment.
Groundwater The term geologists use for underground water ( when it snows or rains and water soaks into the ground and trickles into cracks or spaces of rock layers.)
River System a stream that gains water from other bodies such as tributaries.
Tribuatry a stream that flows into a larger stream or river.
Meander a loop like bend in the course of a river.
Oxbow Lake a meander that has been cut off from the rest of the river because of river path changing.
Drainage Basin the land area from which river systems collect their water
Flood Plain the flat wide area of land along a river.
Divide the high ground between two drainage basins.
Rivers and Streams streams are channels along which water continuously flows downhill. A river is a large stream.
Rills and Gullies a gully is a large groove or channel in the soil that carries runoff after a rainstorm. Rills are tiny grooves in the soil.
Delta Sediment deposited where a river runs into an ocean
Runoff amount the amount of water that does not seep into the ground after a storm or melty 1, amount of precipitation 2. vegetation 3 type of soil 4. shape of the land 5. how people use the land
3 Agents of Erosion 1. water 2. wind 3. glacier
Created by: leahdickman
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