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Aug 31, 2017

How far away is lightning if thunder sounds 10 seconds after the lightning flashes?


Step 1 : Introduction to the question "How far away is lightning if thunder sounds 10 seconds after the lightning flashes? "



Thunder is the sound caused by lightning. The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning. In turn, this expansion of air creates a sonic shock wave, similar to a sonic boom, which produces the sound of thunder, often referred to as a clap, crack, peal of thunder, or boom.



Step 2 : Answer to the question "How far away is lightning if thunder sounds 10 seconds after the lightning flashes? "



2 Miles : The speed of sound in dry air is approximately 343 m/s or 1,127 ft/s or 768 mph (1,236 km/h) at 20 °C (68 °F). This translates to approximately 5 seconds per mile (or 3 seconds per kilometer).


Step 3 : Other interesting facts related to the question "How far away is lightning if thunder sounds 10 seconds after the lightning flashes? "



The cause of thunder has been the subject of centuries of speculation and scientific inquiry. The first recorded theory is attributed to the Greek philosopher Aristotle in the fourth century BC, and an early speculation was that it was caused by the collision of clouds. Subsequently, numerous other theories were proposed. By the mid-19th century, the accepted theory was that lightning produced a vacuum.


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