Three examples of mechanical waves are sound waves, slinky waves and water waves. Mechanical waves differ from electromagnetic waves because the energy is transferred through another medium, such as the metal in a slinky, rather than through a vacuum, such as light through outer space.
A "wave" produced by an audience at a stadium is an example of a mechanical wave because the wave requires fans to exert mechanical energy by rising and sitting. The waves that move in the ocean occur because the particles that compose the water undergo motion. The three types of mechanical waves are surface waves, transverse waves and longitudinal waves.