Which waves travel faster in non-layered homogeneous structure?

The number of classes of earthquakes based on magnitude of Ritcher scale are ______

Structures built on which land have to withstand greater risk during earthquakes?

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

The elastic waves generated at the focus are seismic waves.

How many types of earthquakes are classified based on the cause of origin?

What are the P and S waves collectively called?

Which type of roofs gives better resistance against shocks?