How far does sound travel per day?
Examples: How far does the sound of a vaccum cleaner travel and where does it end? How far does the sound of a subway train travel and where does it end? How far does the sound of a cash register travel and where does it end? What's the average number of loud noises that occur per day?
When sound travels through air, the energy of the sound gets used up moving the molecules of the air. After a few seconds, the sound energy is less than the natural random motion of the air molecules. For EXTREMELY loud sounds, such as a volcano exploding, the sound energy might last for several minutes or even hours, before it dies out.
The noise of a vacuum cleaner dies out in just a few 100 meters. A subway train's noise goes for a few kilometers.
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