# How Fast Does Sound Travel In Air?

## How does sound travel in the air?

Sound travels in air as a series of compressions and rarefactions. When an object vibrates it will move back and forth. As it moves forth, it pushes adjacent air particles. This is a compression: an area of high pressure that moves along the direction of the sound wave.

## What is the formula for speed of sound in air?

Sound Speed in GasesFor the specific example of dry air at 20°C, the speed of sound in air is 343 m/s, while the rms speed of air molecules is 502 m/s using a mean mass of air molecules of 29 amu. vsound in helium = m/s = ft/s = mi/hr.

## How much faster does sound travel in water vs air?

Sound travels 4.3 times faster in water than air. In water, the particles are much closer together and they can quickly transmit vibration energy and the sound wave travels over four times faster than it would in air.

## What can sound not travel through?

Sound cannot travel through a vacuum. A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work on it.

## Is sound louder in water?

Sound that’s generated underwater stays underwater; very little sound passes from water to air. But if you put your head under the water, the sound becomes much louder. You also feel more of a sound when you’re underwater. Above the surface, the sound waves only vibrate your eardrum (unless the sound is very loud).

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## Which is faster light or sound?

Sound travels at about 340meters per second. So, in meters, light travels about 1000 times faster than sound. Light travels about 1km/s faster than sound.

Pierre Gassendi

## How do you calculate sound?

Physics Tutorial – Sound – Decibel Levels

• Find the ratio of the sound intensity to the threshold intensity.
• Take the logarithm of the ratio.
• Multiply the ratio by 10.
• Divide the decibel level by 10.
• Use that value as the exponent of the ratio.
• Use that power of ten to find the intensity in Watts per square meter.

## Does light travel faster in water or air?

Air’s refractive index is about 1.0003, while water’s is about 1.3. This means that light is “slower” in water than air. This is because it’s more likely to hit a molecule and then get re-emitted, lengthening the amount of time the light takes to get through a certain distance of the medium.

## Does sound travel faster in solid or air?

Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.

## Does sound travel faster in water or steel?

In fact, sound waves travel over 17 times faster through steel than through air. Sound waves travel over four times faster in water than it would in air.