Foreshocks are often recorded in which phase?

60 – 300 km focus distance is seen in which type of earthquake?

What do the rocks undergo during seismic shocks?

The seismic waves which are longitudinal ______

The elastic waves generated at the focus are seismic waves.

The shallow earthquakes occur very rare.

What is the depth of focus in the shallow earthquakes?

The magnitude of the quake is based on what aspect of the wave?