martes, 5 de abril de 2011

WATER EROSION AND DEPOSITION

Runoff:
 Water that doesn"t soak into the ground or evaporate but intead flows across Earth"s surface.








channel:
 Water moving down the same path that create 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 wich stream or river that collects runoff.


Meander:
curve that grows to become a broad.




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




permeable:
that water can pass throught them. 
                 
impermeable:
water cannot pass throught them


aquifer:
a layer of permeable rock that lets water move freely.


water table:
are pores in the rocks that are filled with water is the zone of saturation.


spring:
is a water table that is so close to earth surface of water that flows and make a spring.   
                               
geyser: 
is hot spring that erupts periodically.


cave:
crack in the limestone that enlarge until an undergrownd opening.












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