Question : A seismograph is used to measure:
Option 1: rain precipitation
Option 2: underground water level
Option 3: earthquakes
Option 4: underground mineral content
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Correct Answer: earthquakes
Solution : The correct option is earthquakes.
A seismograph is used to measure ground motion caused by seismic waves generated by earthquakes or other sources of seismic activity. The primary purpose of a seismograph is to detect and record the magnitude, direction, and duration of ground motion during an earthquake.
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