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.

Detailed explanation-2: -P waves can move through solid rock and fluids, like water or the liquid layers of the Earth. It squishes and stretches the rock it moves through just like sound waves compress and expand the air as they move through it.

Detailed explanation-3: -P waves are seismic waves that compress and expand the ground like an accordion. S waves are seismic waves that vibrate from side to side as well as up and down.

Detailed explanation-4: -Primary waves (P-waves) are the fastest moving waves of an earthquake and thus are the first felt. These waves are compression waves, meaning the waves are close together and contain a great amount of pressure. This causes the rock it moves through to stretch and compress as the wave passes.

Detailed explanation-5: -P waves can travel through liquid and solids and gases, while S waves only travel through solids.