Explain why dogs pant during hot summer days using the concept of evaporation?
Answers
Answer:
Dogs pant during the hot summer days to reduce their internal temperature. When the dogs pant, the water molecules get absorbed from its body and evaporate. Thus, the dogs body gets cooled inside despite of scorching heat.
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