It is a device called a seismographe. It is used to determine the magnitude on a scale which is then deciding how bad the earthquake is.
The Seismograph is used to measure the Magnitude of an earthquake.
The proper subject is "earthquake", its whole group is "A big earthquake".
It depends on how big the earthquake is. A big earthquake will cause more damage to the area.
An earthquake's magnitude is a measure of how strong it is
a Seismograph measure earthquake vibrations
magnitudea measure of the amount of the energy released by earthquake . earthquake is measure through Ricthter scale that measure the magnitude of seismic waves that it has
to rate an earthquake
The Richter magnitude scale is used to measure the strength of an earthquake.
There was a big earthquake in 2010 in Haiti. The earthquake was 7.0
seismograph is how to measure the intensity the earthquake will be or was.
to rate an earthquake
8.1