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Lauren's water cycle
Flashcards on the water cycle
15
Science
4th Grade
05/24/2009

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Term
evaporation
Definition
the change of state from a liquid to a gas
Term
condensation
Definition
the change of state from a gas to a liquid
Term
precipitation
Definition
any form of water that falls to Earth's surface from the clouds
Term
runoff
Definition
precipitation that flows over land (or "runs off")into streams and rivers.  This water later enters oceans.
Term
water cycle
Definition
the continuous movement of water between the atmosphere, the land and the oceans
Term
ground water
Definition
precipitation stored below the ground
Term
water table
Definition
the upper surface of underground water, the upper boundary of the zone of saturation
Term
tributary
Definition
a stream that flows into a lake or into a larger stream
Term
watershed
Definition
the area of land that is drained by a river system
Term
divide
Definition
the boundary between drainage areas that flow in opposite directions
Term
aquifer
Definition
a body of rock or sediment that stores ground water and allows the flow of ground water
Term
porosity
Definition
amount of open spaces in a layer of rock
Term
permeability
Definition
the ability of a rock or sediment to let fluids pass through its open spaces or pores
Term
recharge zone
Definition
ground surface where water enters the aquifer
Term
artesian spring
Definition
a spring whose water flows from a crack in the cap rock over the acquifer
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