It's not a question solely of weight, but of density. When water freezes, the amount of hydrogen bonding (Attraction between slight imbalances in positive [hydrogen] and negative [oxygen] charges) increases, resulting in the formation of a crystalline structure. As it happens, this structure happens to be less dense (less molecules per unit volume) than liquid water, and will hence float on top of, or in it.
Because water expands as it turns into ice, and a pound of ice must therefore take up more room than a pound of water. Only about one-ninth of an iceberg floating in the sea is above water.
Archimedes' principle (paraphrased) - an object placed in water will float in direct proportion to the weight of the water it displaces.
ice floats on water because when water is cooled its density becomes low . Density of ice is 973.1 (kilogram per cubic meter) where as water is 1000 (kilogram per cubic meter) due to its low density and high volume it floats over water.
Because of the crystalline structure of ice, it is less dense than water. Water is the most dense at around 4 degrees F (just above freezing.) At temperatures above 4 degrees F, the density of water starts to decrease. Strange, eh? Water has lower density at 0 F than 4 F and lower density at say 10 F than 4 F.
This goes to show how unique water is (and how fun it is to study!)
by flysky5 years ago
Why only around 11% of an iceberg is above water, while the rest of ice is hidden?Hint: the density of see water is 1030 kg/m3, the density of ice is 920 kg/m3.
by naufillzaman6 years ago
Why do ice floats on water?
by khawfash8 years ago
For some time now, I've noticed that he drinks a lot more water than I'm used to seeing him drink, and sometimes he'll just lay around in front of his dish, only to drink more water before he either camps out again or...
by ngureco8 years ago
Why Do Dead Bodies Float On Water?
by Myn Is Me5 years ago
Why does a stick appear bent if part of it is immersed in water?
by timorous7 years ago
Here's yet another pointless, time-wasting game fo' ya! **For each 'post', a question that starts with "Why does..." shall be posted. **The next person shall provide an answer.**This answer can be...
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