Transcript Groundwater PPT - Effingham County Schools

 2%
of Earth’s total water is frozen
in ice caps and glaciers.
 Less
than 1% (0.65%) of Earth’s
water is fresh water in lakes and
streams, groundwater, and water
vapor in the atmosphere.
 Most
of the freshwater
on Earth is located in
glaciers and ice caps.
 Groundwater
is water that occurs
as a liquid resource that is
dispersed through innumerable
holes, pores, fractures and
cavities in bodies of rock or
sediment.
 Porous
means the rock has many
pores and things can easily
penetrate it.
 When
something is impermeable
then water cannot easily penetrate
it.
 An
aquifer is an underground
layer of permeable rock or
sediment that contains water.
A
layer of impermeable rock is
located immediately below an
aquifer.
A
layer of permeable rock is
located above an aquifer.
 Aquifers
have rocks that have very
large pores in them. This allows
them to hold large amounts of
water.
 How
do we get water out of
aquifers? Pumps pull the water up
from the aquifer.
 What
is saltwater intrusion?
Saltwater from the ocean entering
a fresh water aquifer.
A
geyser is
formed
when heat
from
magma
heats
water and
forces it to
shoot out
of the
ground.
 Water
in an artesian spring flows
naturally out of the ground
because of pressure.
 Springs
are naturally formed
locations where ground water
comes to the surface and wells
are man-made structures
designed to bring water to the
surface from deep underground.