The seismic waves produced by an earthquake are monitored and tracked ... S waves and surface waves. P waves are longitudinal waves, and their relative speed is faster than other waves.

A massive 7.6 magnitude earthquake struck in the Caribbean on Saturday evening, approximately 130 miles southwest of the Cayman Islands. The National Weather Service ( NWS) Tsunami Alerts has ...

sound waves cause air particles to vibrate back and forth; ripples cause water particles to vibrate up and down. A longitudinal wave is one in which the vibrations of the particles are parallel to ...