P Waves
By Earthquake Hazards Program
2021 (approx.)
![Diagram showing P waves (small jolt or light shaking or not felt), S waves (larger jolt or strong shaking), and surface waves (rolling motion))](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/p%20waves%20s%20waves%20surface%20waves.gif?itok=y6KEW2f9)
Detailed Description
A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving.
Sources/Usage
Public Domain.