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How does a thermos such as the one shown keep hot drinks hot?

User Capri
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2 Answers

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Answer: B

Explanation: i took the test

User Ashis Kumar
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A thermos keep hot drinks hot B: By limiting the amount of thermal energy that flows out of the drink

What is mechanism behind thermos ?

By reducing heat transfer, a thermos—also referred to as a vacuum flask is intended to maintain hot beverages hot. By generating a vacuum space between the flask's inner and outer layers, it accomplishes this. By reducing heat transfer by conduction and convection, this vacuum zone serves as insulation.

A bottle having a double-walled compartment within is called a thermos. During building, the air between the two walls is drawn out, leaving a vacuum. A thermos is made to keep hot things hot by preventing heat from escaping, as opposed to having a heating element within.

complete question;

How does a thermos keep hot drinks hot?

A: By absorbing radiant energy that might enter the thermos

B: By limiting the amount of thermal energy that flows out of the drink

C: By limiting the amount of cold that flows into the drink

D: By transmitting radiant energy into the thermos

User Noam M
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