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Tornado
Member rating: No Rating | Words: 1498 | Submitted: Fri Aug 01 2008
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TORNADO - NATURE'S MOST VIOLENT STORMS A tornado is a violently rotating column of air which is in contact with both cumulonimbus clouds or a cumulus cloud base and the surface of the Earth (which happens rarely). Although there are many different shapes and size of tornados, they are usually a visible condensation funnel. It has its end touching the earth and is often encircled by a cloud of debris. Most tornadoes travel at about 177 km/h or less, are 75 m wide, and will stop after traveling several kilometers. However, there are some can reach 480 km/h, stretch 1.6 km across, and last for more than 100 km. This is a shot of a cumulonimbus cloud ... ... then formed a tornado ... ... finally, the beast stopped. Birth of a tornado 1/ When the ground grow warmer in spring and the air aloft is cold, warm air near the surface rises. As it cools,...
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