What are the Different Seismic Waves?

Body waves 

P- and S- waves are called "body waves" because they can travel through the interior of a body such as the Earth's inner layers, from the focus of an earthquake to distant points on the surface. The Earth’s molten core can only be travelled through by compressional waves.

P-waves travel fastest, at speeds between 4–8 km/sec (14,000–28,000 km/h) in the Earth's crust. S-waves travel more slowly, usually at 2.5–4 km/sec (9000–14,000 km/h).

Surface waves 

Surface waves, in contrast to body waves can only move along the surface. They arrive after the main P and S waves and are confined to the outer layers of the Earth. They cause the most surface destruction