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Title: A catastrophic earthquake is one with a magnitude over 9.0. It has strong effect Post by: einsteindude on Dec 1, 2014 A catastrophic earthquake is one with a magnitude over 9.0. It has strong effects over areas thousands of miles in diameter. Catastrophic earthquakes are recorded about once every
A) month. B) 2 years. C) 20 years. D) 500 years. Title: Re: A catastrophic earthquake is one with a magnitude over 9.0. It has strong effect Post by: bSharp on Dec 2, 2014 Content hidden
Title: Re: A catastrophic earthquake is one with a magnitude over 9.0. It has strong effect Post by: Nirvana93 on Nov 2, 2015 hi
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