Question

1. 22. List the factors affecting evaporation.
23. Why is water sprinkled on a roof during a hot summer day? 24. Why does evaporation cause cooling ?
25. Why do naphthalene balls disappear when kept in air for some days?
26. Why do wet clothes do not dry easily on a rainy day?
27. Compare evaporation and boiling. 2​

Answer 1

Answer:

Ans 22 = Liquids changes into vapour by the process of evaporation. The factors that affect the rate of evaporation of liquids are temperature, surface area, wind speed, and humidity.

Ans 23 = On a hot summer day, when we sprinkle water on the roof or open ground, it evaporates quickly because of the heat of the sun. ... When sweat evaporates after absorbing the energy from the surrounding, it gives us a cooling effect.