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?

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  • 11 months ago

    See also spring and Fall Overturn in http://www.waterencyclopedia.com/Hy-La/Lakes-Physi...

  • 11 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

    but

    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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  • Ray
    Lv 7
    11 months ago

    It would freeze from the bottom upwards instead of from the surface downwards.

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