If for ancient China, (i am assuming because you said did) it is seismograph
there hands
Earthquakes can never be predicted because Mother Nature is a surprise to us all
One way to measure airspeed is to use a device called a pitot tube.
The Rickter (RICK-tur) scale has been popular for decades to measure the intensity of earthquakes, yet it had its issues. These days the Mercalli scale is most often used by geologists and vulcanologists.
Earthquakes are detected and measured using seismometers or seismographs.
Since a seismograph is a device used to measure the magnitude earthquakes, someone who studies earthquakes would use it.
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 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.
Scientists use seismographs.
http://www.thetech.org/exhibits_events/online/quakes/seismo/ try that link it tells you all about the seismograph which is the device they use
Richter Scale
Seismographs are used to measure earthquakes, and how violent they are.
You could use a long tape measure or a laser measure device.You could use a long tape measure or a laser measure device.
A seismograph is a device that scientists use to measure earthquake severity. It also determine the origination of the tremor and magnitude.
They use a richter scale to measure intensity and magnitude.
A chinese Baloon