21 terms

Wetlands and ground water

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wetland
An ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year.
swamp
A wetland ecosystem in which shrubs and trees grow.
marsh
A wetland ecosystem defined by many types of grasses and few to no trees.
bog
A wetland ecosystem often associated with moss, and few to no trees.
estuaries
A wetland ecosystem where freshwater and salt water meet.
groundwater
Water found in the spaces between soil particles and cracks in rocks underground.
porosity
The percentage of the total volume of a rock or sediment that consists of open spaces. (The higher the porosity the more water it can hold.)
water table
The upper limit of groundwater held in an aquifer.
aquifer
A body of rock or sediment that stores groundwater and allows the flow of groundwater.
permability
The ability of rock or sediment to let fluids pass through its open spaces or pores.
impermeable
A characteristic of materials, such as clay and granite, through which water does not easily pass.
well
a hole dug or drilled to reach the water table
recharge
new water that enters the aquifer from the surface
artesian well
A well in which water rises because of (the water) pressure within an aquifer
spring
A flow of groundwater that emerges naturally at the ground surface.
hot spring
a pool formed by groundwater that has risen to the surface after being heated by a nearby body of magma
geyser
A hole in the ground that spurts hot water and steam that is heated from magma in the Earth's crust.
cave
A large naturally formed hollowed out space in or above the ground.
sinkhole
A depression produced in a region where soluble rock has been removed by groundwater.
zone of aeration
Soil region above water table where pore spaces are filled with air..
zone of saturation
Soil region below the water table where pore spaces are filled with water.