BIt traps heat your body produces and slows its escape
CIt absorbs cold from the air
DIt pushes warm air toward you
A coat is a thermal insulator. It slows the flow of heat from your warm body to the cold air outside, keeping you warm.
Question 2 True / False
Trapped air is a good thermal insulator.
TTrue
FFalse
Answer: True
Air that is trapped in small pockets (like in foam, feathers, or bubble wrap) cannot move around and carry heat away, making it an excellent insulator.
Question 3 Short Answer
Why does a thermos keep hot drinks hot and cold drinks cold?
Think about your answer, then reveal below.
Model answer: A thermos uses insulating materials (like a vacuum and reflective layers) to slow heat transfer in both directions.
The thermos slows heat from escaping (keeping hot things hot) and slows heat from entering (keeping cold things cold). It works both ways because it reduces heat transfer.