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It can be understood from the passage that it is very important to study and measure earthquakes in order to ----.
Early in the 20th century, volcanologist Giuseppe
Mercalli created a scale to categorize earthquakes
based on the level of damage incurred. This Mercalli
intensity scale ranges from Level 1, which is registered
only by seismographs, to Level 12, which results in
severe changes on the Earth’s surface and the
destruction of almost all buildings. The more popular
and more scientific Richter scale, developed by Charles
Francis Richter, calculates the intensity of an
earthquake as “magnitude” (M) on a logarithmic scale.
The M-value is determined from the distance between
the hypocenter of the earthquake and the seismological
recording station, as well as the amplitudes recorded on
seismographs. Earthquakes with magnitudes less than
2.0 are not perceivable by people. Each number on the
Richter scale represents an earthquake ten times more
powerful than the number below it. Today, scientists
use the more precise moment-magnitude scale. To
calculate the M-value, this scale multiplies the area of
the fault’s rupture by the distance moved along the
fault. The study and measuring of earthquakes is crucial
in aiding scientists and engineers with planning for
future occurrences, especially because there could be
deadly consequences.