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Old March 11, 2011, 01:43 AM
Zunaid Zunaid is offline
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Join Date: January 22, 2004
Posts: 21,739

Earthquake Magnitude Scale

MagnitudeEarthquake EffectsEstimated Number
Each Year
2.5 or lessUsually not felt, but can be recorded by seismograph.900,000
2.5 to 5.4Often felt, but only causes minor damage.30,000
5.5 to 6.0Slight damage to buildings and other structures.500
6.1 to 6.9May cause a lot of damage in very populated areas.100
7.0 to 7.9Major earthquake. Serious damage.20
8.0 or greaterGreat earthquake. Can totally destroy communities near the epicenter.One every 5 to 10 years
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