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1. What is Tornado?
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2. What is Tornado
Tornadoes are fierce rotating columns of air that
are in contact with both the surface of the earth
and a cloud. These tornadoes mostly occur in the
United States.
As the warm air flows upwards, a downward air cur-
rent forms, creating a thunderstorm. If a strong
wind blows through the clouds, it twists the rising
air currents into a whirlwind. This whirlwind spins
faster and faster until it forms a tornado.
Hot air Tornado
Cloud
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3. The wind generated by a tornado is the most powerful
on Earth, damaging almost everything that comes in
itspath.Whenabuildingcomesinwayofatornado,the
air pressure inside the building exceeds the air pres-
sure outside. This is why many buildings which have
come in way of a tornado, are known to have exploded.
Most tornadoes in the United States occur in the
Great Plains. In 1925, one of the fastest and largest
tornadoes killed 689 people as it traveled 354 kilom-
eters across Missouri, Illinois and Indiana.
What is Tornado
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4. Cool facts
Winds generated by a tornado usually spin at
about 500 kilometers per hour.
Tornadoes move at speeds of up to 100 kilom-
eters per hour.
Although tornadoes generally last less than an
hour, they can cause lots of damage.
PROJECT
Where has the word tornado come from?
Who are storm chasers?
What is Tornado
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