Fresh Water Notes

Pages 6 - 11

What is Water?

• 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 Oceans2%: 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

• Hydrologic Cycle (water cycle)

Transportation

Condensation

Precipitation

Evaporation