Longitudinal waves - (particles or vibrations) move in the same direction as wave movement. Transverse waves - (particles or vibrations) move at right angles to the direction of movement of the wave.

Some waves move through a substance because the particles vibrate at right angles to the direction that the wave is moving in, these types of waves are called transverse waves. Other waves travel ...

With all the various types out there, your engine will either be a transverse or longitudinal one. For many vehicles, the decision as to which of these two engine types your vehicle will have is ...