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The point on The living mountain pdf’s surface farthest from its center. These forces can locally raise the surface of the earth. There is...

The point on The living mountain pdf’s surface farthest from its center. These forces can locally raise the surface of the earth.

There is no universally accepted definition of a mountain. Elevation, volume, relief, steepness, spacing and continuity have been used as criteria for defining a mountain. Whether a landform is called a mountain may depend on local usage. UK government’s definition of a mountain, for the purposes of access, is a summit of 600 metres or higher. Any similar landform lower than this height was considered a hill.

Earth’s land mass is mountainous. Earth’s crust move, crumple, and dive. The height of the feature makes it either a hill or, if higher and steeper, a mountain. Major mountains tend to occur in long linear arcs, indicating tectonic plate boundaries and activity. Fold mountains occur when two plates collide: shortening occurs along thrust faults and the crust is overthickened. Thus the continental crust is normally much thicker under mountains, compared to lower lying areas. When rocks on one side of a fault rise relative to the other, it can form a mountain.

Erosion causes the surface of mountains to be younger than the rocks that form the mountains themselves. The ground then heats the air at the surface. However, when air is hot, it tends to expand, which lowers its density. Thus, hot air tends to rise and transfer heat upward. Convection comes to equilibrium when a parcel at air at a given altitude has the same density as its surroundings.

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