If I had to guess, it’s because the temperature above the water is constantly colder than the water itself – but that is what I actually don’t understand.
If the surface temperate is extremely colder than the temperature of the water itself, wouldn’t the cold “sink” that much faster, making the warm water “rise” at an equivalent rate, and thus forcing more of the cold water to the bottom?
Maybe a better post for stupid questions, but I’m very curious what causes this – perhaps this just applies to air, and not water? And if that’s the case, then also why?
In: 14
Water’s density is greatest at 4° C. As water’s temperature approaches 4° C it sinks, leaving either warmer or colder water to take its place.
So as a lake cools toward freezing, the coldest water is near the surface, and water closest to 4° C is at the bottom.
Latest Answers