Sound waves exist as variations of pressure in a medium such as air. Sound waves travel through the air in a similar way to the way water waves travel through water. Sound travels faster through liquids and solids than through gases.
In physics, a wave is a disturbance that travels through a medium such as air or water, and moves energy from one place to another. Sound waves, as the name implies, bear a form of energy that our biological sensory equipment -- i.e., our ears and brains...
Sound waves in reality are nothing more than vibrations. As the vibrations travel through the air to the ear, the speed or frequency of the vibrations determine the tone of the sound as we hear it.
Longitudinal waves, also known as l-waves, are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of travel of the wave. Mechanical...