What Causes a Tsunami

At the close of the year 2004, at 7 a.m. on Dec.26, a megathrust quake 160 miles off the Sumatra coast sent 500-mph tsunamis out into the Indian Ocean. The waves hit the Sumatra province of Acch 15 minutes later, and in less than 7 hours it reached Africa, 3000 miles away. Little did Asia know that they were about to be hit by one of the worst Tsunami's to hit land in recorded history. A Tsunami, meaning wave in the harbor in Japanese, is a series of waves produced by one of 4 things: an earthquake, a landslide, a asteroid/meteor or a volcanic eruption. …