Multiple choice

Why are woolen clothes considered as warm clothes?

  1. Air is trapped between the fibres of woolen clothes.

  2. They are made of wool which is thick.

  3. Wool is a bad conductor of heat.

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Air is trapped between the fibres of woolen clothes, which is a bad conductor of heat and so keeps us warm.

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