Question

main causes of earthquake are​

Answer 1

Main cause is the movement of tectonic plates on the surface of the earth.

Answer 2

Answer:

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. They don't just slide smoothly; the rocks catch on each other.