Science When you heat water in a pan, the surface gets hot quickly, even though you are applying heat to the bottom of the pan. Why? Asked by Dr. John Carmen on 09 Jan 03:59 Last updated by anonymous on 10 Jan 00:05
Convection is making this happen. It's moving heat from the bottom to the top where the cold water is. The hot molecules are expanded and lighter so they move toward the cold.
