Top best answers to the question «What causes an underwater volcano erupts»
- Plate Tectonics. Natural occurrences, like the gravitational pull, rotation of the Earth, tidal changes, and variation in the positions of the Sun and Moon cause these tectonic plates to shift and collide. The shifting and collision of the tectonic plates with each other cause underwater volcanoes to erupt.
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Volcanoes underwater erupt in much the same way as those on dry land. They erupt when pressure builds up. The difference between these two types of volcanoes is that the lava produced in an underwater volcano cools dramatically faster than the lava on land.