Question

Теплопроводность льда в 21,5 раз больше , чем свежевыпавшего снега.Чем объястняется это отличие?

Answer 1

Ну, конечно, расстояниями между молекул, ведь энергия, тпло, передаются от молекулы к молекуле.

Answer 2

Просто снег рыхлый. Между кристаллами льда снега находится воздух, а у воздуха низкая теплопроводность.

Answer 3

The Difference in Thermal Conductivity between Ice and Freshly Fallen Snow

The statement that the thermal conductivity of ice is 21.5 times greater than that of freshly fallen snow is intriguing. Let's explore the possible reasons for this difference.

Thermal conductivity is a measure of how well a material conducts heat. It quantifies the rate at which heat flows through a substance when there is a temperature difference across it. Higher thermal conductivity means that heat can pass through the material more easily.

Ice is formed when water freezes, and it has a relatively high thermal conductivity. This is because the structure of ice allows heat to transfer more efficiently. Ice crystals are tightly packed, forming a solid lattice structure with relatively strong intermolecular forces. These characteristics enable heat to be conducted more effectively through the ice.

On the other hand, freshly fallen snow consists of loosely packed ice crystals with air pockets in between. The air pockets act as insulators, reducing the ability of heat to transfer through the snow. Additionally, the presence of air in the snow reduces the density of the material, further impeding heat conduction. As a result, freshly fallen snow has a lower thermal conductivity compared to ice.

It is important to note that the thermal conductivity of snow can vary depending on various factors, such as the density of the snow, the presence of impurities, and the temperature. For example, as snow compacts over time, its thermal conductivity may increase due to the reduction in air pockets.

In summary, the difference in thermal conductivity between ice and freshly fallen snow can be attributed to the tightly packed structure of ice crystals compared to the loosely packed structure of snow, which contains air pockets that act as insulators.

I hope this explanation clarifies the difference in thermal conductivity between ice and freshly fallen snow. Let me know if you have any further questions!