Continent: Difference between revisions
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A '''Continent''' is a large landmass on [[earth]]. Seven areas are generally regarded as continents; [[North America]], [[South America]], [[Europe]], [[Asia]], [[Africa]], [[Australia]] and [[Antarctica]]. | A '''Continent''' is a large landmass on [[earth]]. Seven areas are generally regarded as continents; [[North America]], [[South America]], [[Europe]], [[Asia]], [[Africa]], [[Australia]] and [[Antarctica]]. In a less strict definition, a “continent” can include the landmass and its nearby islands.<ref>See [http://www.merriam-webster.com/dictionary/continent?show=1&t=1293805404 Webster's dictionary].</ref> | ||
The existence of continents has geological reasons. The [[Crust (geology)|crust]] of continents is much thicker and lighter than that of [[ocean]]s, and because of these reasons continents correspond to emerged land. From the point of view of geology, and more precisely in the theory of [[plate tectonics]], there are more continents than those of geography. In plate tectonics, for example, [[Arabia]] constitutes a separate [[Plate (geology)|plate]], partially constituted by continental crust. | The existence of continents has geological reasons. The [[Crust (geology)|crust]] of continents is much thicker and lighter than that of [[ocean]]s, and because of these reasons continents correspond to emerged land. From the point of view of geology, and more precisely in the theory of [[plate tectonics]], there are more continents than those of geography. In plate tectonics, for example, [[Arabia]] constitutes a separate [[Plate (geology)|plate]], partially constituted by continental crust. | ||
==Footnotes== | |||
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Revision as of 09:24, 31 December 2010
A Continent is a large landmass on earth. Seven areas are generally regarded as continents; North America, South America, Europe, Asia, Africa, Australia and Antarctica. In a less strict definition, a “continent” can include the landmass and its nearby islands.[1]
The existence of continents has geological reasons. The crust of continents is much thicker and lighter than that of oceans, and because of these reasons continents correspond to emerged land. From the point of view of geology, and more precisely in the theory of plate tectonics, there are more continents than those of geography. In plate tectonics, for example, Arabia constitutes a separate plate, partially constituted by continental crust.
Footnotes
- ↑ See Webster's dictionary.