Q18 of 84 Page 288

Name the instrument used to measure and record an earthquake.

Seismograph is the instrument which is used to measure and record an earthquake. The tremors produce waves on the surface of the earth. These are called seismic waves. These waves are recorded by the seismograph.


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16

Name one destructive natural phenomenon which cannot be predicted in advance.

 17

List three states in India where earthquakes are more likely to occur.

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What was the magnitude of Bhuj and Kashmir earthquakes on the Richter Scale?

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Name the scale on which the magnitude (or intensity) of an earthquake is expressed.