Which One of the Following Is True Regarding Tsunamis

question 54

Multiple Choice

Which one of the following is true regarding tsunamis?

• A) They travel as deep-water waves at speeds greater than surface seismic waves but slower than S waves.
• B) Their wave heights decrease and wavelengths increase as they move into shallower water.
• C) They are started by fault-induced, horizontal shifts in the seafloor that suddenly propel great masses of water in opposite directions.
• D) They occur in the open ocean, wavelengths are many miles or kilometers and wave heights are only a few feet.

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