10 June 2009

Structured Question

Why is it more effective to wear a few layers of thin clothing than a single thick layer of clothing on a cold day?

There are many layers of air trapped if a person is wearing many layers of clothing.On the other hand, if the person is only wearing one layer of clothing, there is only one layer of air trapped. As air is a good insulator of heat, it will minimise heat loss from the body to the cold surroundings.Thus, it is more effective to wear a few layers of thin clothing than a single thick layer of clothing.

1 comment:

  1. hey(:is it because that there will be many layers of air trapped between each single layer of clothes,so you'll have many layers of insulation compared to just one=more effective to keep warm as more thermal energy is trapped due to air being a bad conductor of heat energy?therefore animals build up their blubber layer by layer right?:D
    -xinyu

    ReplyDelete