GEOLOGY

Detailed explanation-1: -P waves or Primary waves are the first waves to hit the seismographs when an earthquake strikes. They are longitudinal waves which means that the direction of motion and propagation are the same.

Detailed explanation-2: -In P or compressional waves, the vibration of the rock is in the direction of propagation. P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation.

Detailed explanation-3: -P Waves (Longitudinal Waves) They are responsible, in particular, for the terrifying sounds accompanying large earthquakes. These waves travel at about 5 miles per second and force the crustal rock to vibrate along the direction of wave travel.

Detailed explanation-4: -P waves are also known as compressional waves, because they push and pull. Particles subjected to a P wave move in the same direction that the wave is moves in; it is the direction that the energy is traveling in, sometimes called the “direction of wave propagation.”

Detailed explanation-5: -P Waves. P waves are compressional waves that do not produce much damage. They can move through any type of material and travel at almost twice the speed of S waves. High frequency P waves do not weaken, or “attenuate, ” as rapidly as S waves so they retain higher frequencies when they arrive at seismic stations.