What Causes Tornadoes?

Answer

Tornadoes are caused by unstable air in the atmosphere. The lower atmosphere tends to be warmer than normal, while the upper atmosphere tends to be cooler than usual. The varying temperatures combine with unstable wind speeds to make a tornado.
3 Additional Answers
Ask.com Answer for: what causes tornadoes
Clouds form when water vapor condenses in the air. This releases heat, which increases the updraft temperature and the kinetic energy of air movement. In supercell thunderstorms, updrafts are strong and may create a vortex of air that may form a tornado.
Most scientists consider this to be a simplified and incomplete explanation. The finer details of tornado formation and dissipation are still unknown.
Tornadoes can occur when two different temperature winds come into contact with each other. When hot air meets cold air, they start spinning around each other casing a tornado.
There are a few factors that can cause Tornadoes. One of the main factors is uncontrollable winds and the other is the atmosphere. Tornadoes can be scary so be careful. You can find more information here: http://www.weatherquestions.com/What_causes_tornadoes.htm
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