Explain why dogs pant during hot summer day using the concept of evaporation
Answers
Answer:
Dogs like humans can't get rid of the heat by sweating, instead they pant. Panting results in the evaporation of the dog's saliva from its tounge, which further lowers the temperature in that part, due to the absorption of heat during evaporation.
Answer:
1. Dogs pant during hot summer days and get their body cooled. This cooling effect is due to evaporation. Evaporation is a surface phenomenon.
2 Temperature of a system falls during evaporation. During summer the temperature in the human body increases the temperature of the skin. As a result, the water in the sweat glands starts evaporating. Evaporation is a cooling process in which human body gets cooled.
3. Dogs don't have sweat glands. Their body is covered with hair. They have sweat glands only in their feet.
4. So by panting the water on the tongue evaporates resulting in the cooling of the dog's body