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? choose one or more:
(a) determined from the amplitude recorded by a single seismometer
(b) determined from the amplitude recorded by several seismometers
(c) uses a logarithmic scale
(d) calculated using area on the fault that slipped
(e) represents the amount of energy released
(f) determined using damage done by the earthquake