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kidsMay 13, 20163:33pending

为什么大海有涨潮和落潮

小喇叭

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涨潮退潮,即潮汐,与月亮有关。一般地说,地球上月亮对着的一侧因为受到月球的引力,所以水会涌起,背着月亮的一侧因为月球对它向地心的引力最小,所以水也会涌起,这就是涨潮;而与月亮与地心连线垂直的地方,水位最低,这就是退潮。

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为什么大海有涨潮和落潮

小喇叭

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