Sound waves are travelling vibrations of particles in media such as air, water or metal.
So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.
Hence, Sound cannot travel through vacuum, but it requires a medium.
What can sound travel through?
Sound waves need to travel through a medium such as solids, liquids and gases. The sound waves move through each of these mediums by vibrating the molecules in the matter. The molecules in solids are packed very tightly. Sound travels about four times faster and farther in water than it does in air.
Why can sound not travel through a vacuum?
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 there really no sound in space?
It’s long been said that there’s no sound in space, and that’s true, to a point. Conventional sound requires a medium to travel through, and is created when particles compress-and-rarify, making anything from a loud “bang” for a single pulse to a consistent tone for repeating patterns.
Can sound travel through liquids?
Liquids: Sound travels faster in liquids than in gases because molecules are more tightly packed. 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.
What absorbs the most sound?
In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators – absorbing most sound, whereas dense, hard, impenetrable materials (such as metals) reflect most. How well a room absorbs sound is quantified by the effective absorption area of the walls, also named total absorption area.
Does the sun make noise?
The surface of the Sun produces sound waves because the surface is convecting and this produces pressure waves that travel into the inner corona. But yes, the surface does produce sound waves, but they have very low wavelengths measures in hundreds of miles!
Can sounds travel in a vacuum?
Sound can leap across a vacuum after all. IN SPACE, no one can hear you scream. Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.
Why can’t astronauts hear sounds from outside their spacesuits?
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.
Is sound a transverse wave?
Sound can propagate through a medium such as air, water and solids as longitudinal waves and also as a transverse wave in solids (see Longitudinal and transverse waves, below). The sound source creates vibrations in the surrounding medium.
Does space have a smell?
According to astronauts on the International Space Station (ISS), space does indeed have a smell; and a rather peculiar one at that. As you know, we’ll never be able to directly smell space since there is no atmosphere.
Does space make a sound?
Space is a vacuum — so it generally doesn’t carry sound waves like air does here on Earth (though some sounds do exist in outer space, we just can’t hear them). But the various probes zooming through our cosmos are capable of capturing radio emissions from space objects.
Can you hear sound on Mars?
Given that sound waves need an atmospheric medium through which to travel, many people are surprised to learn that any sounds at all can be heard on Mars. The Mars Microphone may be able to hear these winds and perhaps even a type of lightning within sandstorms.