The shaking and vibrating of the earth's surface is called an earthquake. The shaking may vary between very small tremors to a violent vibration.
On the basis of the nature of shaking, earthquakes are classified as vertical and horizontal. In the vertical earthquake, the vibration is up and down and in the horizontal earthquake, the vibration is lateral. Horizontal earthquake is more devastating because collapsing of buildings occur more in it.
What is meant by epicenter and seismology?
The point on the surface of the earth vertically above the hypocenter is called an epicenter of the earthquake.
The science that deals with the study of an earthquake is called seismology.
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