none
The wave is called an electromagnetic wave.
Sound is a pressure wave. Objects that "allow" sound to travel through them could be called wave guides.
The wave is called a "reflected wave" when it bounces back off the boundary between two different materials.
Lots of things are true; for example:* Electromagnetic waves can travel through a vacuum.* Sometimes, but not always, they can also travel through other materials. It depends on the material and on the frequency of the wave.* In a vacuum, they will always travel at the same speed - the so-called speed of light.For more information about electromagnetic wave, I suggest you read some other sources, for instance, the corresponding Wikipedia article.
Sound waves can travel through any material, but not through a VACUUM. You may be thinking of the term "MEDIUM", which is often used GENERICALLY to signify what a 'Wave" is traveling through. -------------------------------------------------- The material is called "matter".
When waves travel in groups, it is called wave packets. Wave packets are localized disturbances that consist of a group of individual waves with varying frequencies and wavelengths.
The material through which a wave travels is called the medium. Waves can travel through different mediums, such as air, water, or solid materials like metal. The properties of the medium, such as its density and elasticity, can affect the speed and behavior of the wave.
The type of wave that requires a medium to propagate and cannot travel through a vacuum is called a mechanical wave.
The general name for the different substances or materials through which a wave moves is called a medium. Waves can travel through mediums like air, water, solids such as metal, or a vacuum in the case of electromagnetic waves.
The wave in which particles move back and forth at right angles to the direction of travel is called a transverse wave. This type of wave is commonly observed in phenomena such as light and electromagnetic waves.
The primary body wave that is a longitudinal wave is the P wave. P waves are compressional waves that travel through solid and liquid materials by causing particles to move in the same direction of wave propagation.
The seismic wave that squeezes and pulls rocks in the same direction is called a P-wave, or primary wave. P-waves are longitudinal waves that travel through the Earth, moving particles in the same direction as the wave itself. They are the fastest seismic waves and can travel through both solid and liquid materials, making them crucial for understanding the Earth's interior.