A wave is produced due to the disturbance of particles of a medium. Waves are produced when particles of a medium vibrates. Energy is transferred from one point to other point when a wave propagates. There are two types of waves including transverse waves and longitudinal waves. Transverse waves are those waves in which movement of particles is perpendicular to the propagation of wave. Those waves in which movement of particles or disturbance in particles is parallel to the propagation of waves, are called longitudinal waves. Moreover, electromagnetic waves do not require any medium for their production.