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Photograph provided courtesy of Steve Albers
How Far Away Is The Thunderstorm?
It takes 3 seconds for sound to travel 1 kilometer (5 seconds to travel 1
mile). The next time a thunderstorm comes
your way, look out your bedroom window and watch for lightning.
When you see a lightning flash count the number of seconds until you hear
thunder. Use the above
calculation to figure out how far away the thunderstorm is.
Example: You see lightning flash across the sky. 15 seconds
later you hear thunder. How far away was the lightning bolt?
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