Think about the fact that water is most dense at 4°C, and the fact that ice is much less dense than water.?
Think about the fact that water is most dense at 4°C, and the fact that ice is much less dense than water.
a. What would happen to a lake or a pond in the winter (in a cold climate) if this wasn’t the case?
- runningman022003Lv 711 months ago
See also spring and Fall Overturn in http://www.waterencyclopedia.com/Hy-La/Lakes-Physi...
- Old Science GuyLv 711 months ago
ice is about 9/10 ths as dense as liquid water
so it floats
and a pond would over a long period of cold weather freeze from the top down generally leaving a goodly amount of liquid under the ice which is insulated from the cold air by the ice itself
fish and other aquatic life can survive in this liquid portion of the pond
if ice were more dense, then it would sink as it formed and the pond would freeze from the bottom up and quite likely freeze solid as the water at the surface would have no insulation
furthermore cold climate lakes and ponds would have a layer of ice on their bottoms most of the year perhaps even permanently
all in all dense ice would make it tough or even impossible for the development of aquatic life.
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- RayLv 711 months ago
It would freeze from the bottom upwards instead of from the surface downwards.