Question

how earth quake are formed

Answer 1

earth quakes occurs due to the disturbance in the earth's crust i.e. in the plates which are below the earth's crust.

Answer 2

Hey Readers,

They are formed due to movement of Tectonic plates where the Lithosphere stands. There are 3 types of movement of plates:
1 Convergent
2 Divergent
3 Overlapping

Thanks!