Seismic Waves that Travel through the Earth's Interior:
* P-waves (Primary waves): These are compressional waves that travel the fastest through the Earth. They cause particles to move back and forth in the same direction as the wave is traveling.
* S-waves (Secondary waves): These are shear waves that travel slower than P-waves. They cause particles to move perpendicular to the direction of wave travel.
Seismic Waves that Travel along the Earth's Surface:
* Surface waves: These waves travel along the Earth's surface and are responsible for much of the damage caused by earthquakes. They travel slower than P-waves and S-waves but can have larger amplitudes. There are two main types of surface waves:
* Love waves: These waves cause the ground to move horizontally, perpendicular to the direction of wave travel.
* Rayleigh waves: These waves cause the ground to move in a rolling motion, similar to ocean waves.
So, while seismic waves can travel through the Earth's interior, some seismic waves also travel along the Earth's surface, and these are the ones that we typically feel during an earthquake.
