Question

imortant point on sound

Answer 1

sound is a source it has is like a wave and trough...

Answer 2

sound ia a form of energy which produces a sensation of hearing in our ear.
it is produced because of vibration.

sound needs a medium to travel.medium can be solid liquid or gas.

sound travels fastest in solids and slowest in gases.

sound can't travel through vacuum .

there are 3 characteristics of sound-pitch ,loudness.,quality.

two types. of sounds - audible and inaudible sounds.
the sound whose frequency lies between 20hz to. 20000hz are audible sounds.
sounds whose frequency is less than 20hz is inaudible sound.

note:Hz means Hertz