A tsunami that is caused by an undersea earthquake is also called a seismic sea wave. Scientists can calculate where and

when a given undersea earthquake occurred and predict when the resulting seismic sea wave will reach shore. The scientists base their calculations on data provided by instruments called seismographs. These instruments detect vibrations called seismic waves that the earthquake sends through the rock beneath the ground (Phillip). An earthquake on land differs greatly than one underwater. The fact that there is water involved makes the situation even more tedious to handle. To detect an earthquake underwater is sometime impossible, the wave may come without any warning the wave may cause more death and damage than ground shaking.

Along with earthquakes and landslides, arise another cause to the tidal wave is volcanic eruptions. Many people know what destruction a volcano eruption may be on land, but in the preparation of a tsunami they are other factors that are considered. For example, the sudden seafloor movement can be caused by a large earthquake or by the collapse of an island volcano during or after an eruption (Volc

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Approximate Pages = 3 (250 words per page double spaced)