Abbr. Mt. or Mtn. A natural elevation of the earth's surface having considerable mass, generally steep sides, and a height greater than that of a hill.
Mountains are landforms that rise above the land surface in a limited area. They usually have steep, sloping sides and slightly rounded or sharp ridges and peaks. A mountain generally has a height of over 600 meters above the land, and exists on every continent and under the oceans. There are also different types of mountains: fold, block, volcanoes, dome and plateau.
Mountains are also more than just landforms, as humans depend much on them for survival. A tenth of the world¡¯s population, approximately 60 million, lives near or on the mountains. They¡¯re also a source of precious freshwater: all major rivers are fed by tributaries from mountain sources. Mountains appear in over 75 percent of the world¡¯s countries, and cover one-fifth of Earth¡¯s land surface.
Suffice to say, mountains are very important to the survival and livelihoods of humans. Click on the links on the left to find out more about them.