Question

Explain how the thermos flask prevents heat loss by:

a. conduction

b. convection

c. radiation

(Guys please tell me step by step because I am doing homework)​

Answer 1

Answer:

The vacuum between the glass walls prevents heat loss by preventing radiation. ... The vacuum prevents the heat loss by conduction because vacuum is a bad conductor of heat. The stopper prevents the heat loss by convection because it is tightly sealed. And the inner reflecting layer prevents the heat loss by radiation.

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Answer 2

Explanation:

The thermos flask consists of a double-walled glass vessel resting on a cork inside a metal or plastic case. The outer surface of its inner wall and the inner surface of its outer wall are silvered. This prevents heat transfer due to radiation. ... The double-walled glass vessel and vacuum prevents heat loss by conduction.