1. List the top ten earthquakes by Richter number-include the location and date- that occurred in the 50 states since 1800. Cite the specific references that you used?
2. List the top ten earthquakes by Richter number-include the location and date- that occurred in the contiguous 48 states since 1800. Cite the specific references that you used?
4. The Richter scale was developed in the 1930.’s. How are Richter numbers determined for earthquakes that occurred prior to that time?
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