Subject :NSO Class : Class 6
Subject :NSO Class : Class 8
The tremors produce waves on the surface
of the earth. These are called __(i)__. The waves are recorded by an instrument called the __(ii)__. Richter scale is a __(iii)__ scale. An earthquake of magnitude 6 has __(iv)__ times more destructive energy than an earthquake of magnitude 4.
(i) | (ii) | (iii) | (iv) | |
---|---|---|---|---|
A | Earthquakes | Seismowave | Linear | Hundred |
B | Earthquakes | Seismograph | Linear | Thousand |
C | Seismic waves | Seismograph | Non-linear | Thousand |
D | Seismic waves | Seismophone | Non-linear | Hundred |
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