Earthquakes do not have mass as such. Rather they have magnitude and intensity. Magnitude is the amount of energy released by the earthquake so should ultimately have units in joules.
Both earthquake magnitude and intensity can be estimated from the amplitude of seismic waves as recorded on a seismometer.
A seismograph
This instrument is a balance.
An instrument that measures the shaking of the ground during an earthquake.
A seismometer is the instrument that measures the density of an earthquake, which is done by detecting and recording the vibrations produced by seismic waves. These measurements help scientists determine the magnitude and intensity of an earthquake.
A seismograph is an instrument used to measure movement of earthquake. It measures the seismic waves of that area.
It's a seismograph.
a scale
a beaker
a weighing scale
A seismograph records the intensity measured by the Ritcher Scale.
it is called a knife
The instrument that detects, measures, and records the energy of earthquake vibrations is called a seismometer or seismograph.