What are the characteristics of longitudinal waves? Do particles travel from one place to another place? Is sound is a longitudinal wave?
In a longitudinal wave, the particles of the medium oscillate about their mean positions, and the direction of their oscillation is always parallel to the direction of the propagation of the wave. Also, when the particles vibrate in such a manner, they form compressions and rarefactions.
No, particles don’t travel but energy travels from one place to another place.
Yes, sound wave is a longitudinal wave.