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How can scientists make a map of earthquake using seismograph by the waves in the paper?what is the use of map?
Seismograms tell seismologists how strong an earthquake is and how far away it is.A seismometer is a machine that records seismic waves. In the past, all seismometers were seismographs because they produced a graph-like representation of the seismic waves they received. The paper record is called a seismogram. Modern seismometers record ground motions using electronic motion detectors. The data are then kept digitally on a computer.

Procedure

Seismographs have a pen suspended from a stationary frame, while a drum of paper rotates beneath it. The pen is weighted so that it is suspended and not attached to the ground. The drum is attached to the ground. As the earth shakes in an earthquake, the pen remains stationary but the drum moves beneath it. This creates the squiggly lines that make up a seismogram.


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