Rocks behave as ____ masses towards operating stresses.

What are the P and S waves collectively called?

The point of origin of an earthquake below the earth’s surface is called ______

Which earthquake is local in nature and rarely occurring?

The phase which involves restoration to state of equilibrium is ______

The study of earthquakes is called ______

What is the maximum depth of focus observed till date?

Further classification of L-waves is done into how many types?