Written by 7:29 am Science

How Long Does It Take An s-Wave To travel 4,000 km?

The answer to this question depends on a number of factors, including the density of the material through which it travels.

The speed of sound in air is approximately 340 m/s at 20°C. If you know the temperature and pressure, you can calculate the speed of sound at any other temperature and pressure using the following equation:


where v is the speed of sound, gamma is adiabatic index (around 1.4), T is temperature (in Kelvin), and P is pressure (in pascals). This equation assumes that there are no compressible effects in air or other materials.

Once you have an idea of how fast sound travels through air at a given temperature, you can use this information to determine how far an earthquake s-wave will travel in a given amount of time. The distance traveled by an s-wave depends on its frequency, because higher frequencies travel further than lower ones do.

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Last modified: October 12, 2022