A seismograph is a machine that can measure the

Answer 1

ground motion during an earthquake. It records seismic waves, which are vibrations that travel through the Earth's crust. These waves are caused by the release of energy from tectonic plates shifting or by volcanic activity. By analyzing the patterns of seismic waves, scientists can determine the location, magnitude, and direction of an earthquake. They can also use this data to understand the structure of the Earth's interior and predict the likelihood of future earthquakes.