The type of waves where the motion of particles is perpendicular to the direction the wave travels are called transverse waves.

Here's a breakdown:

* Transverse Waves: The particles in the medium oscillate perpendicular to the direction of wave propagation. Imagine shaking a rope up and down; the waves travel horizontally, but the rope itself moves vertically. Examples include:

* Light waves

* Electromagnetic waves

* Waves on a string

* Ripples on the surface of water

In contrast, longitudinal waves have particles that oscillate parallel to the direction of wave propagation. Think of a slinky: you push and pull it, creating compressions and rarefactions that travel along the slinky. Examples include:

* Sound waves

* Seismic P-waves

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