jueves, 14 de abril de 2011

Water Erosion and Deposition

 Runoff
Water that doesn't soak into the ground or evaporate but instead flows across Earth's surface.

Channel
Grove created by water moving down the same path.

Sheet Erosion
Occurs when water that is flowing as sheet picks up and carries away sediments.
Drainage Basin
Is the area of land from which a stream or river collects runoff.

Meander
The curve grows to become a broad arc.
Groundwater
Water that soaks into the ground collects in these pores and empty spaces and becomes part of.
Permeable
Describes soil and rock with connecting pores through which water can flow.
Impermeable
Describes materials that water cannot pass through.
Aquifer
A layer of permeable rock that lets water move freely.
Water table
The upper surface of this zone.
Spring
Forms when the water table meets Earth's surface; often found on hillsides and used as a freshwater source.
Geyser
Is a hot spring that erupts periodically, shooting water and steam into the air.
Cave
An underground opening.
Longshore current
Current that runs parallel to the shoreline, is caused by waves colliding with the shore at slight angles, and moves tons of loose sediment.
Beach
Deposits of sediment that are parallel to the shore.

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