How does the seismograph measure an earthquake? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.

How does the seismograph measure an earthquake?

Seismographs record the vibrations of the earth. It is a delicately hung weight which remains still when an earthquake occurs. But the post which holds it, moves. There is a chart which is attached to the post under the weight. When the chart moves, the weight makes a record on it. From this, the time of the wave, force of the motion, and direction from which the wave comes, can be grasped.

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