Sound travels through air by means of ____________ (compression/depression) and __________ (rarefactions/refractions).
Sound propagates through a medium in the form of waves. A wave is the disturbance in a medium caused by the vibrations of the adjacent particles. The movement of sound waves because of the vibrations of particles in a medium are called mechanical waves.
Air is the most common medium through which sound travels . When the sound is propagating through air, the neighbouring air particles are set into vibrations. As they move forward, they push the air in front of them. This results in the creation of high pressure region. This region is called compression. As the vibrating air particles move forward, they create a low pressure region called Rarefraction. A series of rarefractions and compressions are produced when an object rapidly move to and fro. These compressions and rarefraction the air particles make the sound wave propagate through it.
Hence , we can say that sound travels through air by means of compression and rarefraction.
The sound in the form of vibration moves forward in all directions from its source. That is how sound reaches our ears from the source.
Air is the most common medium through which sound travels . When the sound is propagating through air, the neighbouring air particles are set into vibrations. As they move forward, they push the air in front of them. This results in the creation of high pressure region. This region is called compression. As the vibrating air particles move forward, they create a low pressure region called Rarefraction. A series of rarefractions and compressions are produced when an object rapidly move to and fro. These compressions and rarefraction the air particles make the sound wave propagate through it.
Hence , we can say that sound travels through air by means of compression and rarefraction.
The sound in the form of vibration moves forward in all directions from its source. That is how sound reaches our ears from the source.