Seismographs have been used on the moon. Specifically they have used for learning about the moon's and Earth's evolution, understanding Earth's seismology with comparative studies, and gaining knowledge about tidal moonquakes or other origins of these forces.
Seismometers. For information on how seismometers are used, please see the related question.
seismic waves
The difference between the two seismograph readings could tell you where the epicenter is located.
A seismometer (replacing the outdated term seismograph), but other instruments may also respond to an earthquake. The simplest example of a seismograph is a pendulum.
seismograph scale
seismic activity, I think
seismograph is one instrument that could measure earthquakes and volcanoes etc but seismograph is many times use at earthquake!
Seismometers. For information on how seismometers are used, please see the related question.
seismic waves
The seismograph was important to ancient china because it could detect an earthquake and warn people so they could escape.
The difference between the two seismograph readings could tell you where the epicenter is located.
Seismograph
seismograph
during an earthquake
A seismograph.
A seismograph is used to measure ground movement or vibrations on the Richter scale.
earthquakes are measured by seismic waves so scientists use a seismograph. there are a bunch of seismographs at a station and each one records the same stuff according to the p, s, and surface waves.