You're absolutely right! In a transverse wave that travels through a medium, the molecules of the medium vibrate perpendicular to the direction the wave is traveling.

Here's a breakdown:

* Transverse Wave: A wave where the oscillations (vibrations) are perpendicular to the direction of energy transfer. Think of a wave on a string, where the string moves up and down (perpendicular) as the wave travels horizontally.

* Medium: The substance through which the wave travels. This can be a solid, liquid, or gas.

* Vibration: The back-and-forth motion of the molecules.

Example: Imagine a rope tied to a wall. If you shake the rope up and down, you create a transverse wave that travels along the rope. The rope itself doesn't move forward, but the individual sections of the rope move up and down, perpendicular to the direction the wave is traveling.

Let me know if you have any other questions!