TELL ME WHY 21-03-2007

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By The Telegraph Online
  • Published 21.03.07

Have you ever wondered, on a fiercely stormy night, what causes a bolt of lightning? When a bolt of lightning shoots through the atmosphere, it increases the atmospheric heat to an amazing 50,000 degrees Fahrenheit in a split second. The highly heated air quickly expands, cools and then contracts, causing shock waves. These shock waves create sound waves, which we hear as thunder.

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