Question

write charatersticks of sound waves explain them

Answer 1

Characteristics of sound wave: Following are the main characteristics of sound wave: Wavelength. Amplitude. Time period. Frequency. Velocity (Speed). To discuss the characteristics of wave, a graphical representation of sound wave is considered. Sound Wave Graphical Representation class 

Answer 2

sound waves are transverse waves i.e, propigation of wave is prependicular to the motion of particles of medium.refer to the pic.
sound wave is a mechanical wave which requires a medium for its propogation.