An earthquake (also known as a quake, tremor or temblor) is the perceptible shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth’s crust that creates seismic waves. Earthquakes can be violent enough to toss people around and destroy whole cities. The seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.
Here are few worst earthquakes in the history:
Duration: 11-13 min
Death Toll: 1000-6000
Monetary Cost: 400- 800 million$ (inflation not adjusted)