Tsunami waves are the undersea occurrence of earthquake exceeding 7.5 on Richter scale. Which one of the following statements regarding this is not correct?

Tsunami waves are the undersea occurrence of earthquake exceeding 7.5 on Richter scale. Which one of the following statements regarding this is not correct? Correct Answer Tsunami is a Latin word.

All   are   correct   except   D,   as Tsunami is a Japanese word

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Which of the following is measured on the Richter scale?
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