
The Richter Scale is used to rate the magnitude of an earthquake which is the amount of energy it released. This is calculated using information gathered by a seismograph.
The largest earthquake on record registered an 9.5 on the currently used Richter Scale, though there have certainly been stronger quakes in Earth's history. The majority of earthquakes register less than 3 on the Richter Scale. These tremors, which aren't usually felt by humans, are called microquakes. Generally, you won't see much damage from earthquakes that rate below 4 on the Richter Scale. Major earthquakes generally register at 7 or above. Richter ratings only give you a rough idea of the actual impact of an earthquake. An earthquake's destructive power varies depending on the composition of the ground in an area and the design and placement of manmade structures. Richer Scales help tell us anbout how much damage the earthquake has done.