Quote:
Originally Posted by Vicky.
Another one that has just come to me...when there is a massive one, like in japan, does the sea level everywhere else go down? The water must come from somewhere.
As devastating as they are, I gotta admit I absolutely love natural disasters. They make me think a lot 
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Technically the displaced water comes from the sea, so yes sea levels around the world would drop a very small amount given the amount of water in the sea.
One other thing to consider is the water itself in the ocean doesnt really move far, its up against more water so its simply a transference of energy for the most part until the energy wave contained in the water reaches an area of land, then it doesnt have resistance against itself so the water flows over the land.