Only the top layer of water freezes in a lake because this layer insulates the rest of the water but the water in a trough in a freezer freezes all the way through. Why?
In: 4
The freezer is generally a lot colder than outdoor temps even in the winter and amount of water in the lake is significantly greater than what you’re going to freeze in a freezer.
Also water in a freezer is being cooled on all sides. A lake is only freezing because of cold air over the water. There’s no cold air around or below the water
Because is not in contact with the ground, or any warmer/insulated surface. In other words, the water in the freezer is loosing heat all around, not just the top.