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Tornadoes
At this point in time,the formation of tornadoes is not fully uderstood by scientists. They usually form in a giantrotating thunderstorm calld a supercell. Supercells are formed when cold polar air meets warm tropical air. The result is a great instability caused bythe rising warm air.A squall line, o narrow zone of cumulonimbus clouds forms,giving life to the tornadoes. Lightning flashes, and heavy rains and hail begin of fall. Soon after, the easiest recognizable part of the tornado, The funnel,seems to descend from the base of the cloud. In actuallty, it does khown as Bernoulli’s principle. As the pressure drops,it causes moisture in the air to condense. This action continues down the spiral. Giving the impression that the funnel is descending from the could base. In addition to th visible funnel. There is also a hissing sound,which tums into a loud roar when the tornado touches the earth.
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