factor is 10^8.8/10^7.1
= 10^1.7
= appr 50 times as strong
On December 16, 1811, an earthquake occurred near New Madrid, Missouri, that temporarily reversed the course of the Mississippi River. The quake had a magnitude of 8.8. On October 17, 1989, a calamitous quake measuring 7.1 on the Richter scale occurred in San Francisco during a World Series baseball game on live TV. The New Madrid quake was _______ times as intense as the San Francisco quake.
1 answer
1 answer