Question

define longitudinal waves and transverse waves

Answer 1

Longitudinal waves are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of propagation of the wave. Mechanical longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when traveling through a medium, and pressure waves, because they produce increases and decreases in pressure.

Plane pressure pulse wave

transverse in which the medium vibrates at right angles to the direction of its propagation.