The following Topics and Sub-Topics are covered in this chapter and are available on MSVgo:
The vibration that goes through a matter is called sound. The sound gets produced when something sends energy waves to a human ear. Sound travels in all directions from the point of its origin. Understand with an example that when something is dropped in till water, concentric waves arise from that object. Similar is the case of sound. It travels from the source point to all directions in the form of a wave. The sound gets faint as the distance increases from the sources of sound. We can listen to sounds for which the vibration per second is between 20 to 20,000 times. Sound needs a medium to propagate from one point to another. It is the reason that sound cannot travel through a vacuum.
Based on the propagation direction, waves get divided into two different types: Longitudinal and Transverse.
Compression and Rarefaction
The sound wave propagates by forming compressions and rarefactions. Each wave consists of a series of regular compressions and rarefactions.
Sound waves have mainly below characteristics:
Finally, the sound is the vibration that propagates as waves from the source to all directions. Sound needs a medium to propagate. The medium can be solid, gas, or liquid. Waves are of two types, viz. Longitudinal and transverse. Sound waves are longitudinal as particles in the matter travel to and fro. Sound waves have amplitude, frequency, wavelength, and velocity that defines how loud the sound is.