GEOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -Seismographs are instruments used to record the motion of the ground during an earthquake.

Detailed explanation-3: -seis·mo·scope. : an instrument for recording only the time or fact of occurrence of earthquakes compare seismometer.

Detailed explanation-4: -Earthquake detection. A seismogram is a record of the ground motions caused by seismic waves from an earthquake. A seismograph or seismometer is the measuring instrument that creates the seismogram.

Detailed explanation-5: -A seismograph is a machine which measures an earthquake.