SRL for [meaning that science has not put a limit on how strong an earthquake could be , and scientists ca n't rule out a `` Mega Quake '' because they 've only been measuring earthquakes for 100 years , a blink of an eye in geologic time]: The magnitude scale is open - ended , [meaning that science has not put a limit on how strong an earthquake could be , and scientists ca n't rule out a `` Mega Quake '' because they 've only been measuring earthquakes for 100 years , a blink of an eye in geologic time] .
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