How do woollen clothes keep us warm in the winter.
How do woolen clothes keep us warm in winter.
In the winter we use woollen clothes.
This air prevents the flow of heat from our body to the cold surroundings.
Woolens create a barrier to this and allow the body heat to stay in closer to the skin.
Discussion in cbse class 7 science help started by g mahesh nov 7 2013.
For instance if you put on a blanket it is trapping our body heat then the body heat bounces of the blanket and hits us that s how we keep warm.
Thus cotton clothes do not prevent heat coming out of our body.
Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.
The clothes warm us up by trapping out body heat.
Second is that the air.
Cotton clothes are thin and do not have space in which air can be trapped.
So cotton clothes do not prevent heat coming out of our body.
Wool is a poor conductor of heat.
The wool fibres trap the air in between them.
People have been wearing woolen clothing for years in the winter months.
The woolen clothes keep us warm for two reasons.
2 the fleece or hair that cover us keeps us very warm.
Woolen clothes keeps people warm in winters because the air gets trapped inside.