Science Fair Project Encyclopedia A lake is a body of water,
surrounded by land, which is not completely covered by
vegetation. The majority of lakes are fresh water, and most lie
in the northern hemisphere at higher latitudes. Large lakes are
sometimes referred to as "inland seas" and small seas are
sometimes referred to as lakes. The term lake is also used to
describe a feature such as Lake Eyre, which is dry most of the
time but becomes filled under seasonal conditions of heavy
rainfall. Many lakes are artificial and are constructed for
hydro-electric power supply, recreation (swimming, wind
surfing,...), water supply, etc. Finland is known as The Land of
the Thousand Lakes and Minnesota is known as The Land of Ten
Thousand Lakes. The Great Lakes of North America also have ice
age origins. Over 60% of the world's lakes are in Canada; this
is because of the deranged drainage system that dominates the
country. There are dark basaltic plains on the Moon, similar to
lunar maria but smaller, that are called lac