Difference between revisions of "Mountain"
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| − | A '''mountain''' is a mass of land that is taller than its surroundings. Most mountains are made by the collisions of thick portions of the Earth's crust. We call the upper part of the crust and the upper mantle a plate. The [[Earth]] has about a dozen plates that move slowly sideways, bouncing into each other and sometimes sliding down under one another. During many of the plate collisions part of the Earth's crust gets shoved up into the air creating mountains. All of the major mountain chains - such as the Rockies, the Himalayas and Alps - were made this way. Without [[plate]]s there would be far fewer mountains. | + | A '''mountain''' is a mass of land that is taller than its surroundings. Most mountains are made by the collisions of thick portions of the [[Earth]]'s crust. We call the upper part of the crust and the upper mantle a plate. The [[Earth]] has about a dozen plates that move slowly sideways, bouncing into each other and sometimes sliding down under one another. During many of the plate collisions part of the Earth's crust gets shoved up into the air creating mountains. All of the major mountain chains - such as the [[Rockies]], the [[Himalayas]] and [[Alps]] - were made this way. Without [[plate]]s there would be far fewer mountains. |
[[Category:Geology]] | [[Category:Geology]] | ||
Revision as of 21:44, May 16, 2007
A mountain is a mass of land that is taller than its surroundings. Most mountains are made by the collisions of thick portions of the Earth's crust. We call the upper part of the crust and the upper mantle a plate. The Earth has about a dozen plates that move slowly sideways, bouncing into each other and sometimes sliding down under one another. During many of the plate collisions part of the Earth's crust gets shoved up into the air creating mountains. All of the major mountain chains - such as the Rockies, the Himalayas and Alps - were made this way. Without plates there would be far fewer mountains.
