Here's why:

* Transverse waves are a type of wave where the particles of the medium move perpendicular to the direction the wave travels.

* Imagine a rope: If you shake one end of a rope up and down, you create a transverse wave. The rope itself moves up and down (perpendicular to the rope), but the wave travels along the rope.

Other examples of transverse waves include:

* Light waves: Electromagnetic waves like light are transverse, with electric and magnetic fields oscillating perpendicular to the direction of propagation.

* Seismic S-waves: These waves travel through the Earth's interior and cause the ground to shake in a side-to-side motion.

Important Note: This is in contrast to longitudinal waves where the oscillations of the medium are parallel to the direction of wave propagation (like sound waves).