It is used to assess the intensity of an earthquake that is adapted to the Modifiesd  Mercalli Intensity Scale used by other countries. 

The sudden shaking of the ground caused by the passing of released energy due to the movement of crustal plates.

An earthquake with a focal depth of less than 70km.

The seismic waves that travel through the earth's interior, while surface waves can only move along the surface.

The point on the earth's  surface directly above the focus

It is a longitudinal or compressive wave that travels through both solid rocks and fluids which is considered to be the fastest seismic waves.

The British mathematician whom the love wave was named after. 

Earthquake with a focal depth of about 70 to 300 km.

The English physicist whom the Rayleigh Wave was name after.

The point where earthquakes originate.

It is a transverse wave that shifts rock particles in the direction the wave is traveling which is considered to be slower  and can only move through solid. 

An instrument that measures seismic vibrations detected during an earthquake.

The seismic waves that travel only through the crust.

The standard scale used by seismologist and earthquake researchers worldwide that provides a more accurate representation of an earthquake size.

The earth's vibrations caused by the sudden release of energy held in rocks that have been deformed by forces coming from moving tectonic plates.