Lakes

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Lakes

• By Kristi Adams
• John Bein

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The Great Lakes

• The Great Lakes

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What is a lake?

• A basin in the landscape that collects water.
• Basins are formed by glaciers, volcanoes, and
  shifting of the earths crust.

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Physical Conditions

• Light absorption determines the color of a lake.

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Structure of a lake

• A lake is divided into three depth zones
• Epilimnion- warm surface layer
• Metalimnion- temperature changes 1C per meter of
  depth
• Hypolimnion- cold and dark waters

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Flora
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Fauna
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Human Influences

• Run off from rain storms
• Fertilizer from our lawns

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