Thursday, April 9, 2009

At what point does a tremor become an earthquake?

just had a 4.6 here in anchorage...18 miles north..It shook the whole building...: )



Ow. I hope nothing got broken!





Tremors and earthquakes are different words for the same thing, kind of like cars and autos. The word tremor sometimes can be used to refer to smaller earthquakes, but the use is quite informal and there are no real rules.

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Science & Mathematics