You are right.
But, since atoms move through the liquid relatively freely, small regions of hot and cold water will randomly appear in the water.
Hotter regions will rise and cooler regions will sink.
This doesn’t change the question .
Hello, I have an interesting question about water natural convection without an external heat source.
Say we have a high tower filled with water. The tower walls don’t allow any heat to escape or enter the system. There is a constant gravitational force present in a system (g-force). At the...