According to the Wikipedia an earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The richter magnitude/scale is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe.
At the Earth's surface, earthquakes makes themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.
The top ten earthquakes are listed below from 1990.
At the Earth's surface, earthquakes makes themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.
The top ten earthquakes are listed below from 1990.
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Recently many earthquakes gave alerts on tsunami waves as in 2004 it made huge death count in all over the world. The picture below explains how the tsunami waves occur after an earthquake.
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