GEOLOGY

Detailed explanation-1: -A P wave is a sound wave traveling through rock. 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.

Detailed explanation-2: -P-waves can pass through both solids and liquids, but the speed that p-waves travel changes as they pass through layers of different rigidity (compositions and densities). Generally, p-wave velocity increases with depth and increases with increasing rigidity of a material.

Detailed explanation-3: -Body waves travel through the body of a planet. Surface waves travel along the surface. There are two types of body waves: P-waves travel fastest and through solids, liquids, and gases; S-waves only travel through solids. Surface waves are the slowest, but they do the most damage in an earthquake.

Detailed explanation-4: -P waves, or Primary waves, are the first waves to arrive at a seismograph. P waves are the fastest seismic waves and can move through solid, liquid, or gas. They leave behind a trail of compressions and rarefactions on the medium they move through. P waves are also called pressure waves for this reason.

Detailed explanation-5: -S-waves cannot travel through liquids. When they reach the surface they cause horizontal shaking. Liquids don’t have any shear strength and so a shear wave cannot propagate through a liquid. Think of a solid material, like a rock.