# Does sound travel faster in vacuum than in air?

## Does sound travel faster in vacuum than in air?

Sound is a mechanical wave , which requires a medium to propagate , so sound cannot travel in vacuum i.e. in vacuum speed of sound is zero , therefore sound doesn’t travels faster in vacuum than in air .

### Which is faster in a vacuum light or sound?

The speed of light as it travels through air and space is much faster than that of sound; it travels at 300 million meters per second or 273,400 miles per hour. Speed of light in a vacuum and air = 300 million m/s or 273,400 mph. Speed of light in water = 226 million m/s or 205,600 mph.

#### Is sound in a vacuum impossible?

In the vacuum of space, there are no (or very, very few) particles to vibrate, so sound cannot travel through this medium. Radio waves travel perfectly fine through a vacuum because they are a type of electromagnetic wave (light), and electromagnetic waves do not need a medium to travel through.

Why can’t astronauts hear each other in space?

One can’t hear in the vacuum of space because sound doesn’t travel through vacuum, it needs a medium. Those are inside the helmet, which contains air and thus a medium for sound. The radio signal is able to travel from one astronaut to another, through the vacuum of space because it isn’t a sound wave.

Do sound waves travel faster in a vacuum?

Since a vacuum is empty space, there is no medium for the sound to travel through. The speed of sound in air mainly depends on the temperature of the air. On average, it is about 343 meters per second (1,125 feet per second), which is faster than the speed of sound in a vacuum.

## Which travels faster than light?

Albert Einstein’s special theory of relativity famously dictates that no known object can travel faster than the speed of light in vacuum, which is 299,792 km/s. Unlike objects within space–time, space–time itself can bend, expand or warp at any speed.

### Can sound travel through space?

No, you cannot hear any sounds in near-empty regions of space. Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel.

#### Why do sound Cannot travel through vacuum?

Sound does not travel at all in space. The vacuum of outer space has essentially zero air. Because sound is just vibrating air, space has no air to vibrate and therefore no sound. Radio is a form of electromagnetic radiation just like light and can therefore travel through the vacuum of space just fine.

How is the speed of sound in a vacuum determined?

Sound is a wave, which means it spreads through the vibration of particles in a medium, such as water or air. Since a vacuum is empty space, there is no medium for the sound to travel through. The speed of sound in air mainly depends on the temperature of the air.

How does sound travel in an empty vacuum?

Sound is a wave, which means it spreads through the vibration of particles in a medium, such as water or air. Since a vacuum is empty space, there is no medium for the sound to travel through.

## Where does sound travel fastest air or solids?

Answer is A. Sound travels fastest in solids and slowest in air. Water is in between. This is because the particles in solids are closer together than the particles in liquids or gases, and the particles in liquids are closer together than the particles in gases.

### Can a light wave travel through a vacuum?

Light can travel in vacuum but sound cannot. This’s because sound waves are vibrating waves (also called pressure waves ) travel by physical contact of molecules. No, sound waves cannot travel through a vacuum; they require a physical medium to travel through (e.g. air, wood).

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