Here's why:
* Transverse waves have oscillations that are perpendicular to the direction the wave travels. Imagine a rope tied to a post, and you shake the end up and down. The wave travels along the rope, but the rope itself moves up and down (perpendicular to the direction of travel).
* Longitudinal waves have oscillations that are parallel to the direction the wave travels. Think of a slinky. If you push one end of the slinky forward, a compression wave travels along the slinky, and the slinky itself moves back and forth in the same direction as the wave.
Examples of longitudinal waves:
* Sound waves: Sound travels through air as compressions and rarefactions (areas of higher and lower pressure), which are parallel to the direction of sound propagation.
* Seismic P-waves: These waves travel through the Earth's interior and are responsible for the first tremors felt during an earthquake.
Let me know if you'd like to dive deeper into any of these concepts!
