Brain Teasers and Puzzles


Melting Ice Cubes


The level of the water will remain unchanged.

Here is why. Since ice is less dense than water, it floats, and some of the ice is above the surface of the water.

Recall that an ice cube expands as if freezes. Thus, it shrinks as it melts.

As a floating ice cube melts, it will shrink in volume just enough to occupy the volume in the water that cube had displaced while frozen.




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