What causes a Tornado or other natural disasters
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What causes a Tornado or other natural disasters

[From: ] [author: ] [Date: 11-11-13] [Hit: ]
there are two seperate ways a tornado is formed. Supercell thunderstorms will often have storm scale rotation which is called mesocyclone. It is known that there is air underneath the storm that is rotating horizontally. When the updraft of the storm strengthens, with the help of inflow winds, the horizontal rotating air can be tilted into the vertical.......
This is a an essay question Thanks! ;)

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It takes a thunderstorm to produce a tornado. Currently, there are two seperate ways a tornado is formed. Supercell thunderstorms will often have storm scale rotation which is called mesocyclone. It is known that there is air underneath the storm that is rotating horizontally. When the updraft of the storm strengthens, with the help of inflow winds, the horizontal rotating air can be tilted into the vertical. If the rotation is strong enough, a lowering from the base of the storm cloud can form and make a wall cloud. Sometimes, the wall cloud can be rotating as well.If the updraft, downdraft, and rear flank downdraft are present, this can strengthen the rotation and can create a funnel cloud. If the rotation remains strong and eventually reaches the ground, then a tornado has formed. A non-supercell tornado does not form from organized storm scale rotation. They form from a vertically rotating air that is already occurring near the ground. This is caused by wind shear from a warm, cold, or sea breeze front, or a dryline. When an updraft moves over the rotating air and stretches it, a tornado can form.

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I agree about Earthquake and Volcano Eruption.And i agree partly with Tornado. if the causes are OK we cannot ignore the influence of the interaction nature mankind through some variables like increase of temperature that partly can explain the augmentation of the occurence of some phenomena.

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Natural processes.

Tornado is caused by strong 'upwards' winds,
earthquakes by movement of tectonic plates,
volcanoes too, or by magma building-up and increasing pressure,
floods by excessive amount of rain,...
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