Question

what are the four shocks of earthquake​

Answer 1

A foreshock is an earthquake that occurs before a larger seismic event (the mainshock) and is related to it in both time and space. The designation of an earthquake as foreshock, mainshock or aftershock is only possible after the full sequence of events has happened.[1]

hope it will help u

Answer 2

Mainshock

before shock

force shock