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| Q. |
The cause for the Tsunami, as deduced by the seismologists, is – |
| A. | Gravitational pull of the moon |
| B. | Low pressure trough in the ocean |
| C. | Deformation of sea floor and vertical displacement of water |
| D. | Sudden change in the monsoon wind |
| Answer» C. Deformation of sea floor and vertical displacement of water | |
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Explanation: Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami. Tsunami can be generated when the sea floor abruptly deforms and vertically displaces the overlying water. Tectonic earthquakes are a particular kind of earthquake that are associated with the Earth's crustal deformation; when these earthquakes occur beneath the sea, the water above the deformed area is displaced from its equilibrium position. |
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