Question

to clean there spectacles people often breathe out on the glass to make them wet? explain why the glass become wet

Answer 1

The glass becomes wet because when we breathe out our breath contains moisture that condenses on the cool surface of the mirror after coming from the warm body. This condensation makes the glass wet

Answer 2

Answer:

a) The glasses become wet because the air we breathe out is warm and contains water vapours which condense on the surface of glass in the form of water droplets. Thus, making the glass surface wet.

Explanation:

b) When the clothes are placed on clothes line get dry after sometime because of the heat produced by the sun . The heat of sun will evaporate the water from the clothes. The process involved in drying up of clothes is called evaporation. Due the sun's heat, the water dries up and rises up into the air.