How are seismic waves formed apex?

Seismic waves are formed when energy is released during tectonic processes, such as earthquakes, volcanic activity, or human-made explosions. This energy causes the ground to vibrate, creating waves that travel through the Earth. There are two main types of seismic waves: primary (P) waves, which are compressional and travel fastest, and secondary (S) waves, which are shear waves that travel slower. These waves propagate through the Earth's layers, providing valuable information about the planet's interior structure.