Which among the following is the purpose of the seismograph?
A
To record the temperature of a given place
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B
To record the magnitude of an earthquake
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C
To record the atmospheric pressure in a given area
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D
To record the strength of a cyclone
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Solution
The correct option is B To record the magnitude of an earthquake The magnitude of an earthquake is measured using an instrument called a seismograph. They detect and record seismic waves. Scientists have seismographs set up all over the world to track the movement of the Earth's crust.