A transverse wave is a type of wave in which the particles of the medium vibrate perpendicular to the direction of wave propagation.
Longitudinal Wave: A longitudinal wave is a type of wave in which the particles of the medium vibrate parallel to the direction of wave propagation.
Mechanical waves are waves that require a medium (such as air, water, or solids) to travel through.
Crest: The crest is the highest point on a transverse wave.