Why is conduction unlikely when ice is placed on a freezer shelf?

Why is conduction unlikely when ice is placed on a freezer shelf?

• A. There is no direct contact.
• B. The ice is too cold.
• C. The ice and shelf are the same temperature.
• D. The shelf acts as an insulator.

Answer: (C)

Conduction requires a temperature difference between the two contacting bodies. Heat flows from the warmer to the cooler surface until both reach the same temperature. When ice sits on a freezer shelf, both are cooled to the same very low temperature, so once they equilibrate there’s essentially no temperature gradient across the interface. With no gradient to drive heat transfer, conduction is effectively negligible. There might be a brief, small amount of conduction during the initial equilibration, but it dies out once the temperatures match.

Conduction requires a temperature difference between the two contacting bodies. Heat flows from the warmer to the cooler surface until both reach the same temperature. When ice sits on a freezer shelf, both are cooled to the same very low temperature, so once they equilibrate there’s essentially no temperature gradient across the interface. With no gradient to drive heat transfer, conduction is effectively negligible. There might be a brief, small amount of conduction during the initial equilibration, but it dies out once the temperatures match.