Friday, May 13, 2011

GeoJeopardy! Fridays #46

Time for GeoJeopardy! Fridays, because it's good time for a break.

- Shake, Shake, Shake -
 
       These waves, from the Greek for "shake", that pass through the Earth's rocks are caused by earthquakes 

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   The force of these smaller post-earthquake tremors decreases quickly over time

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   Herculaneum had not yet recovered from a 62 A.D. earthquake when this calamity occurred 17 years later

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   These, like the thrust type, are defined as narrow zones where rock masses move in relation to one another

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   Differing from Richter, the MM or "modified" this scale uses witness observations to gauge intensity

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Questions, images, and videos courtesy of j-archive.com

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