46 47 A 47 B 47 C 48 A 48 B 49 A 49 B 49 C 50 A 50 B

Lakhmir Singh & Manjit Kaur - Science

15. Some Natural Phenomena

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46 47 A 47 B 47 C 48 A 48 B 49 A 49 B 49 C 50 A 50 B

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Q. 50 B

What is a seismog

Class 8th Lakhmir Singh & Manjit Kaur - Science 15. Some Natural Phenomena

Answer :

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. Following is the well labelled diagram of a seismograph.

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