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Chapter 14: Q11Q (page 390)

Explorers on failed Arctic expeditions have survived by covering themselves with snow. Why would they do that?

Short Answer

Expert verified

They have survived because snow contains confined air that works as an insulator between the outside and the body.

Step by step solution

01

Understanding insulators

Insulators are poor conductors of heat. They do not permit the transfer of heat between the surroundings and the system. Air is a bad conductor of heat and works as an insulator between the outside and the body.

02

Explanation for why explorers on failed Arctic expeditions cover themselves with snow

The snow is like cotton and is flaky. It holds confined air. Air does not permit the outside cold temperature to reach the body nor lets the body warmth escape outside. This way, it works as a blanket for the body.

Thus, when an object is covered in snow, it does lose a large amount of heat to the atmosphere.

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