Diifrance between earthquake and tsunami
Answers
events, when there are major aftershocks) that causes a tsunami. Where the break (the hypocenter of the earthquake) is underwater (in most cases, but not exclusively), its sudden movement, whether up or down, forward or backward, it is going to displace water. It is this displacement that energizes the tsunami wave, which will then radiate (like ripples on a pond, from where a stone might have been thrown into it) from the point of the break until the wave (if significant enough) reaches the opposing shorelines of the near coast, the far coast, all islands that the wave encounters, and so on.
The waves have been known to wrap around an island, so even though you would expect the tsunami wave to hit the shore in a line-of-sight with the originating quake, it would also hit, perhaps not with the same intensity, parts of the island that are not in a direct line of sight with the quake.
Not all oceanic earthquakes cause tsunamis. When they do, however, the wave is proportional to the amount of displacement of the seafloor / plate edge involved in the quake. Multiple tsunami waves can be generated from one quake, and sometimes the initial wave is not the largest wave that will hit.
Not all tsunamis are caused by earthquakes directly, some are indirect. For example a land-based earthquake causes a massive landslide of part of a mountain into the sea. That displacement will cause a tsunami, and depending on the displacement, it may be a significant tsunami. When Krakatau erupted (Krakatoa), the explosion blew off two thirds of its entire island. That caused a massive tsunami which caused a huge loss of life in the surrounding Indonesian islands.
hope this will help you
tsunamis are a ocean wave. Earthquake occur near under ocean