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The news media often report an earthquake's magnitude on the Richter scale. Which of the following items are characteristics of a Richter earthquake magnitude?


A) determined from the amplitude recorded by a single seismometer
B) uses a logarithmic scale
C) determined from the amplitude recorded by several seismometers
D) represents the amount of energy released
E)determined using damage done by the earthquake
F) calculated using area on the fault that slipped

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Answer:

The Richter Scale is used to define the power of earthquakes, it was created by Charles Ritcher in the 1930s to work as a seismogram, regulated and assessed by a seismometer, which responds to ground motions at a distance of around 62 miles from the event, and records the seismograph, a base 10 logarithmic scale.

Thereby the most suitable options are A), B) & D).

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