Wednesday, 21 September 2016

FOCUS AND EPICENTRE

The place of origin of an earthquake inside the earth is called its focus. The shock waves travel in all directions from the focus. On the earth’s surface, the shaking is strongest near the epicentre.


There are several types of earthquakes which affect different parts of the world at different times. Some of the common types of earthquakes are briefly described.
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E arthquakes are tremors which are produced by the passage of vibratory waves through the rocks of the earth. If you throw a stone in a po...

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    Acid Lava Cone or Dome . This cone is formed by acid lava which is viscous and has the dominance of Silica. The lava deposits itself near ...
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    E arthquakes are tremors which are produced by the passage of vibratory waves through the rocks of the earth. If you throw a stone in a po...
  • (no title)
    Circum-Pacific Belt . About 68% of world’s earthquakes are observed along the coasts of vast Pacific Ocean. This is known as the ‘ring of ...