That's a great description! You're talking about sound waves.

Here's why:

* Longitudinal wave: The particles in the medium (like air, water, or a solid) vibrate back and forth *parallel* to the direction the wave travels.

* Vibration: A sound wave is created by a vibrating source, which sets the particles in the medium into motion.

* Carried through a medium: Sound waves require a medium to travel; they can't exist in a vacuum.

Let me know if you'd like to learn more about sound waves!