A seismograph is also known as:

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Seismogram

Seismology

Seismometer

Seismicity

answer is C.

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Detailed Solution

Concept: A seismograph is often referred to as a seismometer. This is the instrument that is used to measure and record seismic waves. Seismic waves are energy waves that flow through the earth's strata, causing earthquakes. Seismology is the study of seismic waves. A seismogram, on the other hand, is a record recorded by a seismograph and measured by seismometers.
These devices are commonly used in earthquake-prone areas. These devices also aid in the prediction of earthquakes. However, the projection is not for a long period. Seismic waves are classified into four types: primary, secondary, surface, and Rayleigh waves. The strength of different waves varies.
Hence, option 3 is correct.

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