Thunder Storms by chchxinxin


									Chapter 2, Lesson 2-6
Solving Equations by Multiplying or Dividing

By: Mrs. Davis
                                               (Objective 2c)
   Lightning causes thunder because a strike of lightning is incredibly hot.

   A typical lightning bolt can immediately heat the air to between
    15,000 to 60,000 degrees Fahrenheit.          Eiffel Tower May 25, 2009

   That's hotter than the surface of the sun!
   A lightning strike can heat the air in a fraction of a second.

   When air is heated that quickly, it expands violently and then
    contracts……… like an explosion.

   It's that “explosion” of air that creates sound waves, which we hear
    and call thunder.
   When thunder is far away we hear it
    as a long, low rumble.

   When lightning strikes close by, we
    hear the thunder as a loud, short

   Lightning always produces thunder.

   When you see lightning but don't
    hear any thunder, the lightning is too
    far away from you for the sound-
    waves to reach you.
   The flash of a lightning strike and resulting thunder occur at roughly
    the same time.

   Since the speed of light is faster than the speed of sound, you’ll always
    see a flash of lightning before you hear thunder.
   The sound of thunder travels
        1 mile in 5 seconds

   You can set up a proportion and use equations to determine the answer to the following

The sound of thunder travels 1 mile in 5 seconds. Suppose you see a
lightening bolt strike and then 15 seconds later you hear the sound of

How many miles is the storm from your house?

       1 mile     =     x miles
    5 seconds         15 seconds

    5x = 15

    x = 3 miles

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