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There are several reasons . The first is due to one of water ’s many amazing attribute : Aside from being necessary for all life ( and refreshing on hot days ) , water is one of the few substances that is slightly denser as a liquid than as a solid . This is why glass cube float in water supply .
secondly , and slightly more interestingly : Most icebergs actually contain a lot of atmosphere . Far from being the solid stoppage of ice many people imagine , icebergs are riddled with billion of petite , trapped air bubbles , give the immense bergs their blank appearance .
Several amazing and interesting properties cause icebergs to float.
Third , iceberg are made from overbold water . Because of the dissolved saltiness in ocean water , it is denser than fresh water , adding bouyancy to the berg .
