What is earthquake

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Posted by Krishna Gupta 7 years, 4 months ago
- 2 answers
Yogita Ingle 7 years, 4 months ago
An earthquake is a sudden tremor or movement of the earth's crust, which usually originates at or below the surface. The outer layer of the earth is solid and is divided into many sections known as plates. These plates, float over the molten magma that flows beneath the earth’s crust. Many of the earthquakes occur on the edges of these plates along fault lines where the plates collide or try to slide past each other.
These include vibrations caused by big rocks falling down hills because of erosion, hollow parts of mines falling down due to dissolution of minerals by water and, in the present times, due to nuclear explosions.
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Sonali Aggarwal 7 years, 4 months ago
Earthquake is suddensudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth's crust or volcanic action.
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