martes, 5 de abril de 2011

Water Erosion and Depositation

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












Channel
Water moving down the same path creating a groove.

Sheet erosion
Occurs when water that is flowing as sheets picks up and carries away sediments.


Drainage basin
Is the area of land from which a stream or river collects runoff.



Meander
Curve grows to become a broad arc.



Groundwater
 Water that soaks into the ground collects in these pores and empty spaces.



Permeable
Pore spaces are connected and water can pass through them.


Impermeable
Water cannot pass through them.

Aquifer
A layer of permeable rock that let water move freely.


Water table
 Upper surface of the saturation zone.


Spring
Found of hillsides or other places where the water table meets a sloping surface.


Cave
Cracks in the limestone enlarge until an underground opening if formed.


Longshore current
Water that runs parallel to the shoreline.

Beaches
Deposits of sediments parallel to the shore.

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