Three different "scales" used when reporting earthquakes: Richter Magnitude Scale (measures amplitude of waves, logarithmic - each unit on scale means 10-fold change, difficult to appreciate, largest quakes have values of 8 or more);
(largest quakes; have; values of 8 or more) (Three different "scales; reporting; earthquakes) (measures; amplitude; of waves) (logarithmic - each unit on scale; means; 10-fold change)
largest quakes Three different "scales measures logarithmic - each unit on scale
have reporting amplitude means
values of 8 or more
earthquakes
of waves
10-fold change