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Facts about Lake

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Such lakes are common in Scandinavia, Patagonia, Siberia, and Canada.

image: alterra.cc
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When the ice retreated, the result was an immense flood that created the Dry Falls at Sun Lakes, Washington.

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According to research published in the journal Science ("Disappearing Arctic Lakes," June 2005), thawing permafrost may explain the shrinking or disappearance of hundreds of large Arctic lakes across western Siberia.

image: www.fecpl.ca
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The Red Sea, for example, is thought to have originated as a rift valley lake.

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The presence of ground permafrost is important to the persistence of some lakes.

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Finland, known as The Land of the Thousand Lakes, has 187,888 lakes, of which 60,000 are large.

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Elsewhere, other researchers have treated lakes as water bodies of 5 hectares (12 acres) and above, or 8 hectares (20 acres) and above.

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Gradually the lake closes, and young peat may form, producing a fen.

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Most lakes are geologically young and shrinking, since the natural results of erosion will tend to wear away the sides and fill the basin.

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A lake may be infilled with deposited sediment and gradually become a wetland such as a swamp or marsh.

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Lakes have a variety of characteristics in addition to those mentioned above.

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A prime example of an intermittent lake is Lake Cerknica in Slovenia.

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Some saltwater lakes are useful for the minerals they contain.

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Deep, temperate lakes can maintain a reservoir of cold water year-round, which allows some cities to tap that reservoir for deep lake water cooling.

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The license plates of the Canadian province of Manitoba used to claim "100,000 lakes," as one-upmanship on Minnesota.

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Given that the surface water of deep tropical lakes never reaches the temperature of maximum density, there is no process that makes the water mix.

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More than 60 percent of the world's lakes are in Canada, as a result of the deranged drainage system that dominates the country.

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Some photographs taken during the Galileo mission appear to show lakes of liquid sulfur on the surface.

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A lake may be formed by any of a number of natural processes.

image: www.gcbl.org
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Lakes can also be formed by landslides or glacial blockages.

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An example of such a release is the 1986 disaster at Lake Nyos in Cameroon.

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Lakes may be classified according to their manner of formation or current characteristics.

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The vast majority of lakes on Earth are freshwater, and most lie in the Northern Hemisphere at higher latitudes.

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Changes in the level of a lake are controlled by the difference between the input and output, compared to the total volume of the lake.

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The U.S. state of Minnesota is referred to as The Land of Ten Thousand Lakes,, and issues automobile license plates boasting of its "10,000 lakes."

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A lake (from the Latin word lacus) is an inland body of water, not part of the ocean, that is larger and deeper than a pond and is localized at the bottom of a basin.

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Geologic evidence appears to confirm, however, that ancient lakes once formed on the surface.

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Of these only the Lake of Menteith and Cally Lake are natural bodies of freshwater.

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Among the most notable examples are the Great Lakes of North America.

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The depth to which light can penetrate a lake depends on turbidity of the water, which in turn is determined by the density and size of suspended particles.

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Large lakes are occasionally referred to as "inland seas," and small seas are occasionally called lakes.

image: c7.alamy.com
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Salt lakes (also called saline lakes) can form where there is no natural outlet, or where the water evaporates rapidly and the drainage surface of the water table has a higher-than-normal salt content.

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Turbid lakes and lakes with many plant-eating fish tend to disappear more slowly.

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Charles Elton, one of the founders of ecology, regarded lakes as water bodies of 40 hectares (99 acres) or more, a value larger than what most modern researchers consider appropriate.

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Lake Vostok is a subglacial lake in Antarctica, possibly the largest in the world.

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An example is Crater Lake in Oregon, located within the caldera of Mount Mazama.

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Due to the unusual relationship between the temperature and density of water, lakes form layers called thermoclines—layers of drastically varying temperature relative to depth.

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Exceptions are lakes such as Lake Baikal and Lake Tanganyika that lie along continental rift zones and were created by the crust's subsidence as two plates were pulled apart.

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Crater lakes are formed in volcanic calderas which fill up with precipitation more rapidly than they empty via evaporation.

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The composition of the lake bed has a significant impact on the flora and fauna found within the lake's environs by contributing to the amounts and the types of nutrients available.

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Conversely, peat soils in a marsh can naturally burn and reverse this process to recreate a shallow lake.

image: olcplc.com
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The largest lakes (in terms of surface area) are listed below, with their continental locations.

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Some lakes, such as Lake Jackson in Florida, came into existence as a result of sinkhole activity.

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Many lakes occupy the basins and valleys created by glaciers in past epochs.

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Significant input sources are: precipitation onto the lake, runoff carried by streams and channels from the lake's catchment area, groundwater channels and aquifers, and artificial sources from outside the catchment area.

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Small, crescent-shaped lakes, called oxbow lakes, may form in river valleys as a result of meandering.

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On 3 June, 2005, in Nizhny Novgorod Oblast, Russia, a lake called Lake Beloye vanished in a matter of minutes.

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Deep, temperate lakes can maintain a reservoir of cold water year-round, which allows some cities to tap that reservoir for deep lake water cooling.

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An example of the latter occurred during the last ice age in the U.S. state of Washington, when a huge lake formed behind a glacial flow.

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The idea here is that rising air and soil temperatures thaw permafrost, allowing the lakes to drain away into the ground.

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Output sources are evaporation from the lake, surface and groundwater flows, and any extraction of lake water by humans.

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The term "lake" is occasionally used to describe a feature such as Lake Eyre, which is a dry basin most of the time but may become filled under seasonal conditions of heavy rainfall.

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The study of lakes, ponds, and other inland bodies of water and related ecosystems is called limnology.

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Some large parrot species, including large cockatoos, Amazons, and macaws, have very long lifespans with 80 years being reported and record ages of over one hundred.

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Some lakes disappear because of human development factors.

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A lake sustains a variety of living organisms and thus forms its own ecosystem.

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Photojournalism is a particular form of journalism (the collecting, editing, and presenting of news material for publication or broadcast) that creates images in order to tell a news story.

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A lake may receive water from one or more of the following sources: melting ice, streams, rivers, aquifers, and direct rainfall or snowfall.

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Dark basaltic plains on the Moon, similar to but smaller than lunar maria, are called lacus (Latin for "lake") because early astronomers thought they were lakes of water.

There are no official or scientific differences between lakes and ponds. Lakes are larger than ponds, but size is relative. ... In general, water bodies that are considered lakes in dry areas would only be considered ponds in regions with abundant water resources where there are more (and larger) bodies of water.

Hold Rivers and Lakes in Your Hand! All sorts of plants and animals live in lakes, including fish, turtles, and algae. Water birds rely on lakes for food, water, and a place to live. Animals that live near a lake may visit it to find food, take a drink, or cool off.

Key Characteristics of Lakes and Ponds. - Lakes and ponds are formed by remnants of glaciers, blocked rivers, and rivers that fill natural basins. - Inland wetlands form as lakes and ponds slowly dry up. The soil is supersaturated with water, and there are small areas of still or slow moving water.

After a long period of time, the meander becomes very curved, and eventually the neck of the meander becomes narrower and the river cuts through the neck during a flood, cutting off the meander and forming an oxbow lake.

This build-up is called deposition. Erosion and deposition eventually cause a new channel to be cut through the small piece of land at the narrow end of the meander. The river makes a shortcut. Oxbow lakes are the remains of the bend in the river.Jun 10, 2011

oxbow lake. noun. A crescent-shaped lake formed when a meander of a river or stream is cut off from the main channel.

The erosion causes the meander neck to narrow until eventually it breaks through. This often takes place when the river has more energy as in times of flood. The river now follows a straight path. After the meander has been cut through the river seals off the bend by deposition and an ox-bow lake is formed.

Lake Superior is the largest freshwater lake in the world in area (if Lakes Michigan and Huron are taken separately; see Lake Michigan–Huron), and the third largest in volume, behind Lake Baikal in Siberia and Lake Tanganyika in East Africa.

Lake Baikal