Earthquakes are usually caused when underground rock suddenly breaks and there is rapid motion along a fault. This sudden release of energy causes the seismic waves that make the ground shake. During and after the earthquake, the plates or blocks of rock start moving—and they continue to move until they get stuck again. The spot underground where the rock first breaks is called the focus, or hypocenter of the earthquake. The place right above the focus (at the ground surface) is called the epicenter of the earthquake. #tectonic #earthquake #seismic #fault #quake #terremoto #earthquakes #sismo #earthtremor #epicenter #plateboundary #tremor #faultline #movingearth #potres #gempabumi #tremblementdeterre #aardbeving #livingearth #platetectonic #erdbeben #shake #architecture #geology #india #design #art #ring #studyiq #pcssaarthi