An earthquake with a 7.0 magnitude on this scale releases about 32 times as much energy as a 6.0
... That 
is, the wave amplitude in a level 6 earthquake is 10 times greater than in a .... 
Generally, you won't see much damage from earthquakes that register below 4 
on... [DOC] [TLE] Kelly Kiloton Index of Earthquake Moment Magnitudes - English [PAR] The Richter Earthquake Magnitude Scale, which was perfected by Charles ...