A measure of an earthquake's effect on a specific location on the earth's surface, particularly the effect of seismic vibrations on the natural environment, human-made structures and people.  

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

The standard scale used by seismologist  and earthquake researchers worldwide  as it provides a more accurate representation of an earthquake's 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.

An instrument that measures seismic vibrations detected during an earthquake.

The type of seismic wave with higher frequency and travel through the earth's interior.

A measure of earthquake's size which reflects the aqmpunt of energy released from the source.

The type of surface wave that creates a rolling motion making the ground move up and down and side to side in the same direction the wave is moving. Most earthquakes are caused by this type.

It refers to smaller events

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