sound wave need material becuse sound wave formed by compresion and rarefaction
Sound waves need a physical material to carry them, but electromagnetic waves don't.
sound waves bounce off of walls. they need air to travel.
Sound wave do not travel through vaccum as it need medium to travel.
Sound wave is a mechanical wave. It means that, for propagation, it badly needs a material medium. But, light waves are not mechanical waves. They are electromagnetic waves. It does not need a material medium. It can pass even through vacuum. Sound wave is longitudinal in nature where as light waves are transverse in nature. Being transverse, light can be polarized. But, sound waves being longitudinal cannot be polarized.
That's basically what sound waves are all about. Sound waves mean that energy is transmitted, by bumping, from one atom (or group of atoms) to the next.
Sound waves need a physical material to carry them, but electromagnetic waves don't.
sound waves bounce off of walls. they need air to travel.
Sound (and vibration) are a wave system of sequential compressions and rarefactions of a material. These waves are mechanical and do need a substance through which to travel. They cannot travel through a vacuum.
The very name "mechanical waves" indicate that these need badly a material medium such as air, water etc.
Sound wave do not travel through vaccum as it need medium to travel.
Sound (and vibration) are a wave system of sequential compressions and rarefactions of a material. These waves are mechanical and do need a substance through which to travel. They cannot travel through a vacuum.
Sound waves don't just travel the slowest in a vacuum, they don't travel at all. The reason is that sound waves, like all mechanical waves, need a medium to travel through.
Because sound waves are mechanical vibrations of material matter. You can't have sound waves in a space where there's no material to vibrate.
Sound waves need air or another material to travel through, or they go nowhere. Astronauts do their job in places without air, so they couldn't be heard by simply talking.
Sound wave is a mechanical wave. It means that, for propagation, it badly needs a material medium. But, light waves are not mechanical waves. They are electromagnetic waves. It does not need a material medium. It can pass even through vacuum. Sound wave is longitudinal in nature where as light waves are transverse in nature. Being transverse, light can be polarized. But, sound waves being longitudinal cannot be polarized.
Any material through which any wave travels is called a medium. Ocean waves travel through the medium of seawater. Sound cannot travel through outer space, because there is no medium there to support sound waves. Mechanical waves such as sound and vibration require a medium through which to travel. Usually air, or a solid or liquid - matter in other words.
Particles. They can't travel through a vacumm