[vorenaxy]

why did it move at more than 500 miles per hour? The terrible tsunami that hit Japan this year was caused by an earthquake with its center under the ocean. The earthquake caused the land (at the fault) to rise about 40 feet, displacing trillions of gallons of water. It was reported that the tsunami moved at about 500 miles per hour--as fast as jet aircraft. The last part I do not understand. Why did the tsunami move at that incredibile rate of speed?

[athenacp]

I found the following page that may help explain:

http://earthsci.org/education/teacher/b ... unami.html