Transcript Movement and Storage of Groundwater

Movement and Storage
of Groundwater
SWBAT describe how ground water is
stored and moves underground;
explain what an aquifer is.
Get your Lab Notebook
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1. Record the volume of sand: ___________
2. Record the volume of the water: ___________
3. Pour the water into the sand cylinder until the water
is flush with the sand.
4. Record the volume of what’s left in the water
cylinder: __________
5. Determine the ratio of the volume of water to the
volume of sand.
6. Determine how many liters of water could be stored
in a cubic meter of sand.
The Hydrosphere
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What is the hydrosphere?
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All of the water on Earth’s crust.
Saltwater 97%
Glaciers and Ice
caps 90%
Precipitation and Groundwater
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Infiltration
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Precipitation that falls on land and enters the ground
Porosity
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Percentage of pore space in a material
Get your lab notebook
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Title: Measuring Pore Space
Sent one person to collect your materials
 Slowly pour water into the containers and stop when
the water just covers the top of the sediment
 Record the volume of water used in each
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Which substance has more pore space? How can
you tell?
The Zone of Saturation
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Zone of saturation
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Depth below Earth’s surface at which groundwater
fills all pores completely
Water table
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Upper boundary of the zone of saturation
The Water Table
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How are gravitational water and capillary water
different?
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Gravitational water is pulled down, due to gravity
and capillary water actually flow up due to the small
pore spaces in rocks
What are some things that affect the water table?
Precipitation
 Season
 Weather conditions
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Groundwater Movement
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How does groundwater move?
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Permeability
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Groundwater moves in the direction of the slope of
the water table. It moves slowly through the pores.
The ability of a material to let water pass through it
What is an aquifer?
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A permeable layer through which groundwater flows
With a partner
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Answer questions 1-5 on page 243.
Be sure to answer in complete sentences.
Finish for homework.