Question

2. Explain why dogs pant during hot summer days using the concept of evaporation (AST
3. Why do we get dew on the surface of a cold soft drink bottle kept in open air? (ASD)
4. Write the differences between evaporation and boiling? (AST)​

Answer 1

No idea about anything kindly write proper questions

Answer 2

A. 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 hu man body increases the temperature of the skin becomes higher and the water in the sweat glands starts evaporating. Since evaporation is a cooling process human body cools.

3) Dogs don't have sweat glands. Their body is covered with hair. They have sweat glands