ScienceQuestion 87 of 120
Which of these best explains why ice floats on water?
a.Ice is warmer than water.
b.Ice has more mass than water.
c.Ice is less dense than liquid water.
d.Ice contains more salt than water.
Explanation
Water expands as it freezes, so ice is less dense than liquid water and therefore floats. Density is mass per unit volume. This unusual property of water helps aquatic life survive under frozen surfaces.
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