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Lakes

Lake Toba also known as Danau Toba in Indonesia is the largest volcanic lake ( crater lake ) in the world.
At 100 km long and 30 km wide, measuring 505 m at its deepest point, it is situated in the middle of the northern part of the Indonesian island of Sumatra.Surrounded by tall mountains, it cradles the large island of Samosir in its middle.
Source: Lake Toba Largest Volcanic Lake in the World | Medan Indonesia Pride http://www.medanku.com/lake-toba-north-sumatra/#ixzz1mWppUPlc
Copyright: http://www.MedanKu.com

 

A lake is a body of water completely surrounded by land. Lakes can either by salty or fresh water. Most lakes are in places where glaciers used to exist. When a glacier moves forward, it carves away a deep valley and when the ice melt s it forms a lake in the valley. Other lakes are formed in craters or when a river changes its course.

Lakes are short-lived surface features because the water can sink into the ground or evaporate into the sky. In order for a lake to remain, it must be constantly fe d by a river or rainfall.

This is a satellite image of the five Great Lakes in North America. It is the largest group of freshwater lakes in the world. The largest and deepest one is Lake Superior located at the top left. Lake Baikal in Siberia, Russia is the deepest lake in th e world.

This is a satellite image of the Great Lakes in North America.
Image Courtesy Environmental Research Institute of Michigan,Ann Arbor. For additional information see http://www.erim.org © ERIM

 

 

source: windows to the universe

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