The expansion of the crust caused the crust to khotkhong. To raise, for example, when a sudden and missing out, so let the energy released in the earthquake waves.
The expansion of the crust caused the crust was crooked. Examples sudden deflection And when it fell apart, thus releasing energy in the form of seismic waves.
The expansion of the earth's crust caused by the earth's bend bend, bend suddenly. And when the object detection and release energy in the form of seismic waves out .