- #1
Zaya Bell
- 44
- 6
Looking back to heat transfer by convection, which means denser molecules move down, lighter molecules move up.
And then water at 4°C expands when cooled further, and at 0°C it contracts when heated. So if water at 0°C in a container is heated from the bottom, its molecules should contract(becomes denser) and should sit well at the bottom but how then is heat transferred to the top?
If we say by conduction, isn't the time to heat such water be much longer since water is a poor conductor of heat.
And then water at 4°C expands when cooled further, and at 0°C it contracts when heated. So if water at 0°C in a container is heated from the bottom, its molecules should contract(becomes denser) and should sit well at the bottom but how then is heat transferred to the top?
If we say by conduction, isn't the time to heat such water be much longer since water is a poor conductor of heat.