GEOLOGY

Detailed explanation-1: -P waves are the first waves that are detected by a seismograph. They are the fastest seismic waves and can travel through gases, liquids, or solids.

Detailed explanation-2: -P waves travel through solid and liquid, but S waves do not travel through liquid.

Detailed explanation-3: -In a P wave, the rock particles are alternately squished together and pulled apart (called compressions and dilatations), so P waves are also called compressional waves. These waves can travel through solids, liquids, and gases. P waves can travel through the liquid outer core.

Detailed explanation-4: -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-5: -P-waves travel through liquids and gases as well as through solids. Although liquids and gases have zero rigidity, they have compressibility, which enables them to transmit P-waves.