Transcript Fresh Water Notes - Hastings Middle School

Fresh Water Notes
Pages 6 - 11
What is Water?
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Water is a compound.
1 water Molecule is made of:
2 Hydrogen Atoms
1 Oxygen Atom
How Much Water?
• All the Water on Earth
97%: Salt Water
Oceans
2%: Fresh Water
Frozen
<1% Fresh Liquid Water
¾
of the world’s population lacks Fresh,
Clean Water
Finding Fresh Water
• Available Fresh water can be found:
• Rivers
• Lakes
• Underground
Ground Water
• Ground water is stored underground in
Aquifers.
• Aquifers: Porous rock layer that holds water.
• 1/3 of the nation lies over aquifers
• Up to ¾ of the U.S. metro areas get their
drinking water from underground.
Water Cycle
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Hydrologic Cycle (water cycle)
Transportation
Condensation
Precipitation
Evaporation