200 BCE.
A seismograph is the device that scientists use to measure earthquakes. The goal of a seismograph is to accurately record the motion of the ground during a quake
A seismograph records earthquake waves.the correct answer is a seismometer a seismograph is the graph to show the recordings
A seismometer / seismograph.A seismograph measures and records the waves generated by earthquakes and similar seismic events.
That would be a seismometer. (size-MOM-uh-ter)
That would be the Richter Scale, which goes from 1 which is barely noticable; to the 10 which would be very massive.
chinese scientists
Many earthquakes are concentrated in narrow zones along plate boundaries.
The historical record of earthquakes is very slim. Earthquakes happened thousands of years before man began keeping records. There are some historical evidence of past earthquakes and the ruins they left so they did happen. No one can tell you when the first one happened.
They Save their work for future references and to study again
Seismograph
refence from books of impact of poor records keeping
Earthquakes
it records the magnitude of earthquakes.
A seismometer.
A seismograph is the device that scientists use to measure earthquakes. The goal of a seismograph is to accurately record the motion of the ground during a quake
richter
keeping records of their whereabouts.