Question

what is seismograph
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wtf (- _ -)​

Answer 1

hi

Explanation:

seismogragh is an instrument used to record earthquake

Answer 2

Answer:

Seismographs are instruments used to record the motion of the ground during an earthquake. As the seismograph shakes under the mass, the recording device on the mass records the relative motion between itself and the rest of the instrument, thus recording the ground motion.