Tornadoes

=Hönö, Jimbo, Lari= =**Tornadoes**= =Tornados are metereological disasters. They are rotating colums of air wich can cause great amount of destruction when they pass by.= =Tornades usually occur in connection with thunder clouds. Tornadoes start deep within vast thunderclouds, where a column of strongly rising warm air is set spinning by high winds streaming through the clouds's top. As air is sucked into this swirling column, or mesocyclone, it spins very fast, stretching thousands of feet up and down through the cloud, with a corkscrewing funnel descending from the cloud's base though there are still some unknow parts in their birthprocess.= =The most extreme tornados can attain wind speeds of more than 300 miles per hour, strech more than two miles across, and stay on the ground for dozens of miles.= =There are several types of tornadoes: landspout, multiple vortex tornado and waterspout.= =A landspout is a tornado not associated with a mesocyclone. A multiple-vortex tornado is a type of tornado in which two or more columns of spinning air rotate around a common center. A waterspout is a tornado over water.= =Tornadoes have been observed on every continent except Antarctica.=

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