Q:

# How far can sound travel?

A:

The distance that sound can travel depends on what medium the sound wave has to go through. The speed of the wave affects the distance that it can travel. Temperature and atmospheric pressure also can directly affect the amount of distance a sound wave can cover.

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Credit: Grand Canyon National Park CC-BY-2.0

Changes in materials, temperature and air pressure can speed up or slow down a traveling sound wave. The distance that a sound wave travels can be figured by multiplying the speed of the sound (approximately 345 meters per second under normal atmospheric conditions at a temperature of 20 degrees Celsius) by the time it takes for a person to hear it once the sound is initiated.

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## Related Questions

• A:

Sound cannot travel through a vacuum, because sound requires a medium to form and travel. Despite what science fiction movies show, there is no sound in space.

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• A:

The speed of sound is dependent on the medium through which it is traveling. Under typical conditions, at sea level, sound travels 1,225 kilometers per hour, or 340.29 meters per second.

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The most basic characteristics of a sound wave are pitch, loudness and tone. A sound wave's frequency is experienced as the wave's pitch. The amplitude determines loudness or volume. The tone of a sound wave can be recognized by the regularity of its vibration.