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groundwater
water that seeps into the ground after rain
zone of aeration
area above the water table that contains air in between soil particles
zone of saturation
open spaces in the soil fill with water that can be extracted by wells
water table
boundary between the zone of aeration and the zone of saturation
porosity
the amount of water that can stored within the pore spaces in the rock or sediment
permeability
a materials ability to release water
aquitard
formed by impermeable materials that create a zone of saturation above it
aquifer
permeable layers that allow water to flow freely throughout
spring
groundwater that emerges naturally from the ground
geyser
hot spring that shoots water from the ground periodically
hot spring
heated by heat flow from magma, a little hotter than air temperature
wells must....
extend down below the zone of saturation
what makes an artesian well different from other wells?
the water in the well rises under its own pressure
what creates a cone of depression?
large amounts of water being pumped out of a well
what replenishes groundwater?
rain
what causes ground subsidence?
water being used faster than it is replenished
what structures are created by ground subsidence?
sinkholes and depressions
