Donna Bailey

Heat is a form of energy present in our body. When the temperatures around us are low, we begin to lose heat. The more we lose heat, the colder we feel.

Now, although igloos are made up of blocks of compressed snow, they keep us warm. This is because compressed snow has air trapped in it and air is a bad conductor of heat. Hence, the heat given off by our body does not get lost from the igloo. It stays in the igloo, thus keeping us warm. Besides this, we know that warm air rises up and cold air sinks to the bottom. Hence, during night, Eskimos, i.e., people living in igloos sleep at the uppermost part of the igloo to stay warm.