Natural Disasters- Tornadoes

What is a Tornado?

   A tornado is extremely destructive winds rotating in a funnel-shape.  A tornado occurs when warm air rises, and is met by cool air at the base of a thunder cloud. The warm air rushes up through the cool air, and because of the earth's rotation, a tornado is formed. A tornado is like a vacuum, it sucks up every thing in its path. This is because of the air pressure in the center of the tornado is a lot lower then the outside. As a tornado loses its power, it begins to shrink back into the cloud it came from. Tornadoes usually occur in the afternoon or early evening, and sometimes there may be 2 or more tornadoes hitting at the same time. They have been known to rip houses of their foundations, and throw cars meters off the ground.

The Fujita-Pearson Scale

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 The Fujita-Pearson Scale is the measurement of intensity of tornadoes. It is measured F0-F5, F0 being light damage, F5 being extremely powerful. The Fujita-Pearson Scale is named after it's creators, Ted Fujita and Allen Pearson. This scale measures the damage a tornado makes on trees, buildings, and other structures. 75% of tornadoes are F0-F1. 25% are F2-F3. Only 2% of tornadoes are F4-F5. 70% of all tornado deaths are caused by F4-F5 tornadoes.  

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