The shaking of the ground is not what kills most victims of earthquakes. The main killers in earthquakes are falling buildings, fires, landslides, avalanches and tsunamis.
The largest recorded earthquake was a 9.5 quake in Chile in 1960.
Sometimes there are many small earthquakes before the big one. These small ones are called foreshocks. After the big earthquake, the mainshock, again there may be many small quakes. These are called aftershocks.
Each year, there are about a million earthquakes around the world. But only about 100 of these cause serious damage.