NATURAL PHENOMENON: TSUNAMI

Tsunami is a water waves caused by the displacement of a large volume of a body of water, usually an ocean, though it can occur in large lakes. Tsunami, Japanese word meaning “harbor wave,” used as the scientific term for a class of abnormal sea wave that can cause catastrophic  damage when it hits a coastline.

Earthquakes, volcanic eruptions and other underwater explosions, sciorrucks , glacier calving and other mass movements, meteorite ocean impacts or similar impact events, and other disturbances above or below water all have the potential to generate a tsunami. But The most frequent cause of tsunami is an undersea earthquake.While everyday wind wave have a wavelenght of about 100 meter and a height of roughly 2 meter

The most destructive tsunami recorded in Sumatra, Indonesia on 26 December 2004. The 9.1 magnitude earthquake off the coast of Sumatra was estimated to occur at a depth of 30 km. The fault zone that caused the tsunami was roughly 1300 km long, vertically displacing the sea floor by several metres along that length. The ensuing tsunami was as tall as 50 m. An estimated US$10b of damages is attributed to the disaster, with around 230,000 people reported dead.

Question

1. What's tsunami?
2. What's tsunami word mean in Japanese?
3. How to generate a tsunami?
4. Where's the most destructive tsunami ever recorded?
5. How many victims caused by tsunami in Aceh on 2004?