GEOLOGY

Detailed explanation-1: -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-2: -P Waves – Body waves that squeeze and stretch rock materials as they pass through Earth; also known as compressional waves or primary waves.

Detailed explanation-3: -The type of seismic wave that compresses and expands rock or the lithosphere is known as p waves. P waves travel in a push-and-pull like motion, almost resembling an accordion or slinky that is pushing and pulling. As these waves move through the lithosphere, they expand and compress the lithosphere.

Detailed explanation-4: -P waves travel through solid and liquid, but S waves do not travel through liquid.

Detailed explanation-5: -P-waves squeeze and release rocks as they travel. The material returns to its original size and shape after the P-wave goes by. For this reason, P-waves are not the most damaging earthquake waves. P-waves travel through solids, liquids, and gases.