Explanation:
A mechanical wave consists of a progressive disturbance, started by an input of energy, that transfers energy from point to point through a medium, without net movement of the medium itself. Mechanical waves can be transverse or longitudinal.
Electromagnetic waves can travel through a vacuum, that is an empty space, whereas mechanical waves cannot. They need a medium to travel such as water or air. Ripples in a pond are an example of mechanical waves whereas electromagnetic waves include light and radio signals, which can travel through the vacuum of space.
