A seismologist would predict that a tsunami produced by an undersea earthquake could travel at 750 kilometers per hour and grow in substantial height as the wave approaches shoreline where friction slows the wave speed down.

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This is a true statement. Tsunamis have been known to travel as fast as 800 kilometers per hour in deep ocean water and can increase in height as they reach the shore due to the decrease in water depth and increase in friction with the seabed.

A Seismologist Would Predict That a Tsunami Produced by an Undersea