Tsunami

God had created the world and everything in it is good. For example trees, animals, sea, air, the stars in the sky, and so on. Behind all of God's kindness, people often spoil; consequently many disasters happen on this earth. In addition to human activity, there is also a result of the nature. On this occasion I took the tsunami as

my object presentation. Tsunami means the displacement of sea or ocean waves that occur due to changes in shape of the sea caused by changes in sea surface vertically with sudden changes in sea level. It can be caused by an earthquake centered under the sea, undersea volcanic eruptions, undersea landslides, or a meteor hit the ocean. Tsunami waves can propagate in all directions. Power contained in the tsunami wave height is fixed to the function and its speed. Sea wave height is only about 1 meter. Tsunami’s waves can travel at speeds of 500-1000 km per hour. Its speed is as fast as aircraft, the rate of waves is not felt by the ship was in the middle of the sea. When approaching the coast, the tsunami wave speed decreases to about 30 miles per hour, but its height has been increased up to tens of meters. Tsunami waves hit can go up to tens of kilometers from the shoreline. Damage and casualties occur due to the Tsunami can be caused due to hit the sea and material carried by a tsunami wave flow adverse impact of the tsunami is damaging anything in its path. Buildings, plants, and resulted in human casualties and causing inundation, sea contamination of agricultural land, soil, and sea. In order not to many victims, it is necessary to advance through several rare prevention, Knowing the disaster information center, such as post disaster, the Indonesian Red Cross, Search and Rescue Team. Identify areas of home, school, workplace, or anywhere else at risk. Knowing the area of highlands and lowlands are at risk of tsunami.

In my opinion, whatever the earthquakes we always deal with including a tsunami alert. Although produced by nature though.