The ground motion of an earthquake wave generated by a 5.0 magnitude earthquake is times greater than the ground motion of a 4.0 magnitude earthquake wave.

10

Explanation:

From Columbia University "For example, a magnitude 5 earthquake produces ten times greater ground motion than a magnitude 4 earthquake."

Each increase in magnitude on the richter scale should represent a 10x greater ground motion, meaning that an increase from 4 to 6 would be 100x more

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