Why does ice float in water? - George Zaidan and Charles Morton
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Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid water, which isn't true for most substances. But why? George Zaidan and Charles Morton explain the science behind how how hydrogen bonds keep the ice in your glass (and the polar ice caps) afloat.
At 2:44, we show a boat floating in water and a hot-air balloon floating in air. And you know that if an object is less dense than the fluid it’s in, it floats. But a boat is made of steel, and a balloon is made of fabric, both of which are denser than air. How is it that both these objects float?
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