Question

Think about the dresses we prefer to wear ip winter or when we are going to visit cooler places. Which natural fibre are they made of? Why do we choose woolen dresses like sweaters, shawls, scarfs etc. Wool is a bad conductor of heat It won’t allow our body to lose heat.

Answer 1

1. Wool is a poor conductor of heat. Air trapped in between the woolen fibres and our body prevents the flow of heat from our body to our surroundings. 

2. So we feel hot and are protected from cold. 

3. Woolen cloth also helps to do use fire. 

4. That is why it is good to wrap a person, who is caught in fire, with a blanket.