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An iceberg floats because water is one of the few substances that is slightly denser as a liquid than as a solid. This is why ice cubes float in water icebergs are made from fresh water. Because of the dissolved salts in ocean water, it is denser than freshwater, adding bouyancy to the icebergs.

Most icebergs actually contain a lot of air.

Far from being the solid blocks of ice many people imagine, icebergs are riddled with billions of tiny, trapped air bubbles, giving the huge bergs their white appearance.

Yes and if you want to get more specific, the density of ice 0.9g/cm cubed and the density of water is 1 g/cm cubed so if you think of this out of 100, 90% of the iceberg is underwater and 10% is above the water. All has to do with density.

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Emmanuel Bednar

Lvl 10
4y ago

What else can I help you with?