Question

explain how earthquake is caused​

Answer 1

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. ... When the rocks break, the earthquake occurs.

Answer 2

Earthquake caused by following reason:-

1. volcanic eruption
2. dislocations of plate
3. displacement of tectonic plate

I hope this will help you.