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Fresh Water

TermDefinition
Water Cycle The continuous movement of water from the ocean to the atmosphere to the land and back to the ocean.
Condensation Takes the place when water vapor cools and changes into water droplets that form clouds in the atmosphere. After loses energy during condensation.
Evaporation Takes place when water from the ocean and the Earth’s surface changes into water vapor. Energy from the sun causes evaporation. Water gains energy during evaporation.
Runoff Precipitation that flows over land into streams and rivers. This water later enters oceans.
Percolation Is the downward movement of water through pores and other spaces in soil due to gravity.
Precipitation Rain, snow, sleet, or hail that falls from clouds onto the Earth’s land and oceans.
Water Table The upper surface of underground; the upper boundary of the zone of saturation.
Aquifer A body of rock or sediment that stores groundwater and allows the flow of groundwater.
Porosity The percentage of the total volume of a rock or sediment that consists of open spaces.
Permeability The ability of a rock or sediment to let fluids pass through its open spaces, or pores.
Artesian spring A spring whose water flows from a crack in the cap rock over the aquifer.
Transpiration The process where plants absorb water through the roots and then give off water vapor through pores in their leaves.
Groundwater Water held underground in the soil or in pores and crevices in rock.
Impermeable Not allowing fluid to pass through.
Well An excavation or structure created in the ground by digging, driving, boring, or drilling to access groundwater in underground aquifers.
Zone of aeration The region between the earth's surface and the water table.
Zone of Saturation The area in an aquifer, below the water table, in which relatively all pores and fractures are saturated with water.
Created by: Annette.passmore
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