There is a sudden movement in the earths crust in an earthquake. However, lava does not appear
Siesmac waves
earthquake
earthquake/fissure
A crack in the Earth's crust that can lead to an earthquake is called a fault.
The earthquake and tsunami were caused by a shift in the earths crust.
earthquake waves travel through the earths crust.
earthquake
Aftershocks.
True((;
earthquakes happen when these sections of earths crust move
The focus is the point in the earths crust where the earthquake originates and the epicentre is the point in the earths surface directly above the focus.