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Water Resources Chapter 11 part 1
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Water Cycle
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Global Distribution
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Fresh Water 71% of earth covered with water
3% of the earth’s water is Fresh water. Of all the fresh water 77% is frozen 22% is ground water 1% is surface fresh water
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Surface Water
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Surface Water All the Fresh Water on the Earth’s Surface.
River systems are the streams and tributaries. These branches resemble roots of a tree or veins on a leaf. The largest River systems are the Amazon, Mississippi and Nile.
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River system
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Water Shed The Area of Land that is drained by a river is called the water shed. Pollution in any area of a watershed will travel with the water into the main river. Changes in the River can be seasonal
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Watershed
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Ground water Ground water is water stored beneath the earth’s surface.
This water is stored between rock and in soil. The water reaches a level where the rocks and soil are water saturated and this is called the WATER TABLE.
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Aquifer An Aquifer is the underground formation that contains the ground water.
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-Most aquifers consist of rock, sand, and gravel.
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Porous and permeability
How can a rock formation hold gallons of water? Porosity:Amount of space between the particles that make up a rock.
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Permeability: ability of rock or soil to allow water to flow through it.
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Water Use
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Aquifer & Recharge Zone
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Filtration of Water in the Recharge Zone
Today’s lab is on Ground water filtration. Water travels through soil, sand/clay to the aquifer. What if any contaminates are removed by these layers before they reach the ground water system?
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