Question

In the following illustation what is happening at (a) and at (b)? what waves arrive over the interval labbeled (c)?​

Answer 1

1. the vibration starts picking up getting stronger and stronger causing the tectonic plate to shake more vigorously

(c) Surface waves

Step-by-step explanation:

P waves - labelled as (a) on the graph - travel fastest and are the first to arrive from the earthquake. In S - labelled as (b) - or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave