12 surprising facts about earthquakes

via Current News – Principia Scientific International
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1. There are several million earthquakes annually
According to the United States Geological Survey, there are around 17 major earthquakes measuring above 7.0 on the Richter scale – and one great earthquake measuring above 8.0 – each year. However, experts estimate that there are actually several million earthquakes annually; many go undetected due to their geographical remoteness or small…

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via Current News – Principia Scientific International http://ift.tt/1kjWLPW

May 17, 2017 at 01:31AM