Question

Why do woollen clothes keep us warm in winter?

• A. Wool is a good conductor of heat.
• B. Wool traps heat effectively between its layers.
• C. Wool is a bad conductor of heat.
• D. Wool produces its own heat from its layers.

Answer 1

Answer: (B), (C)

The correct options are

(B) Wool traps heat effectively between its layers.

(C) Wool is a bad conductor of heat.

1. Wool is a type of animal fabric that has several layers.
2. Wool is a bad conductor of heat, so it does not allow the body heat to escape into the surroundings.
3. Warm air can be trapped between the layers for a long time. This makes wool a suitable and preferred material for clothing in colder seasons like winter.