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Lake A body of (usually fresh) water surrounded by land

Lake A body of (usually fresh) water surrounded by land. LAKES CLASSIFICATION Lakes are classified depending on how they formed and on the quality of the water (freshwater or saltwater). Only in the saltiest lakes there is no life.

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Lake A body of (usually fresh) water surrounded by land

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  1. Lake A body of (usually fresh) water surrounded by land

  2. LAKES CLASSIFICATION Lakes are classified depending on how they formed and on the quality of the water (freshwater or saltwater). Only in the saltiest lakes there is no life.

  3. 1.Tectonic lakes. The movements of the Earth's crust formed the largest lake, the Caspian Sea, and the deepest, Lake Baikal. Caspian Sea is located in a depression between the Caucasus Mountains and Central Asia and its surface is still varying, millions of years after its emergence. 2.Volcanic lakes. The most common form is the one filling the caldera of a shut-off volcano. Some volcanic lakes form when the lava seeps on the slopes, solidifying due to the cold waters. 3.Glacial lakes appear following the melting of the glaciers. They are more common in the Northern Hemisphere: Most lakes in the UK, Finland (about 60,000 !) or Alps formed this way.

  4. 4.Karstic lakes form in calcareous regions and can be subterranean as well. Water dissolves the limestone creating huge caves harboring rivers and lakes. 5.Salt lakes. Most lakes contain freshwater and are continuously supplied with water from the exterior. If the supply of freshwater is limited, minerals from the bottom of the lakes can enter into the water's composition and concentrate, turning the lake salty. The Great Salt Lake from Utah formed this way. The Caspian Sea and the Aral Sea are salty too. INVESTIGATE WHERE ARE THEY 6.Artificial lakes. The most common are reservoirs, like Lake Nasser, formed through the interception of the Nile, and Lake Mead (US), formed through the interception of the Colorado River. They generate hydroelectric power. Many artificial lakes serve as water reservoirs, supplying water for industries and home usage.

  5. HOMEWORK EXAMPLES OF LAKES: NAME AND SITUATION ON EARTH

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