What is the scientific explanation of earth quake?

Answer 1

When the tectonic plates of the Earth separate and then hit each other at some point this is what causes an earthquake

Answer 2

An earthquake is caused by the sudden release of energy in the Earth's crust, resulting in seismic waves that shake the ground. This energy is typically released due to the movement of tectonic plates along fault lines. The interaction between these plates creates stress that eventually exceeds the strength of the rocks, leading to an earthquake.