Question

ᴡʜᴀᴛ ɪꜱ ꜱᴇꜱᴍᴏɢʀᴀᴘʜ??​

Answer 1

An instrument that measures and keeps record of earthquakes

Answer 2

A seismometer is the internal part of the seismograph, which may be a pendulum or a mass mounted on a spring; however, it is often used synonymously with "seismograph". Seismographs are instruments used to record the motion of the ground during an earthquake.