An earthquake's Richter magnitude rating is measured on a Richter Scale Chart by connecting a line from the left side () to the right side (), whereby the line intersects the central magnitude scale at the appropriate magnitude value - 1 to 6.

distance to the epicenter

largest seismic S-wave amplitude value

Explanation:

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An earthquake’s Richter magnitude rating is is measured on Richter scale chart by connecting a line from the left side distance to the epicenter to the right side largest seismic S-wave amplitude whereby the line intersects the central magnitude scale at the appropriate value -1 to 6

The Richter magnitude is a scale used in measuring how big or small i.e the strength of an earthquake