Concept explainers
If two earthquakes have magnitudes
Thus, comparing an earthquake of magnitude 8.0 with another earthquake of magnitude 5.5, we have
The following table shows the magnitudes of selected large earthquakes.
Earthquake | Magnitude |
Sumatran-Andaman, 2004 | 9.2 |
Japan, 2011 | 9.0 |
San Francisco, 1906 | 8.0 |
Baja California, 2010 | 7.2 |
San Fernando, 1971 | 6.6 |
a. How many times more intense was the Japanese earthquake of 2011 than the Baja California earthquake of 2010?
b. How many times more intense was the Sumatran-Andaman earthquake of 2004 than the San Fernando earthquake of 1971?
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Calculus and Its Applications Plus MyLab Math with Pearson eText -- Access Card Package (11th Edition) (Bittinger, Ellenbogen & Surgent, The Calculus and Its Applications Series)
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