This record made by the seismograph is called a seismogram. When you look at a seismogram, there will be wiggly lines all across it. These are all the seismic waves that the seismograph has recorded.

This seismogram shows a 24-hour record of how much the ground moves at Weston Observatory in Weston, Massachusetts. Viewing other seismic stations will show you how much the ground moves in those ...