The clothes warm us up by trapping out body heat.
How do woolen clothes keep us warm in winter.
Woolen clothes keeps people warm in winters because the air gets trapped inside.
Woolen clothes keep us warm in winter 1 wool absorbs moisture up to one third its weight.
Thus cotton clothes do not prevent heat coming out of our body.
How do woollen clothes keep us warm in the winter.
In the winter we use woollen clothes.
Wool is a poor conductor of heat.
2 the fleece or hair that cover us keeps us very warm.
Second is that the air.
Cotton clothes are thin and do not have spaces in their fabrics through which air can be trapped to keep us warm.
People have been wearing woolen clothing for years in the winter months.
Woolens create a barrier to this and allow the body heat to stay in closer to the skin.
So cotton clothes do not prevent heat coming out of our body.
Discussion in cbse class 7 science help started by g mahesh nov 7 2013.
The woolen clothes keep us warm for two reasons.
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.
Cotton clothes are thin and do not have space in which air can be trapped.
The wool fibres trap the air in between them.