Investigation of the water

Characteristics of the water:
Water has different thermal parameter than other substances. Most compounds contract as they cool and expand when they heat. Water does this, too, until just before it starts to freeze. Then it does something remarkable – it begins to expand, even when it grows colder. By the time it does freeze it becomes ice which is actually less dense than liquid water. Ice floats on water instead of sinking. If it did not, life on earth would be impossible. If lakes and oceans froze from the bottom up instead the top down no sea-floor or lake bottom ecologies would exist. Once starting freezing, bodies of water would stay frozen solid forever. The freezing from the top down is insulating the water from further freezing and also allowing rapid thawing.