How will you show the presence of water vapour in air?

Sagot :

I will chill a container so that its outer surface is very cold, but dry. Then I will
wave the container through the air, and point out the liquid water from the air
that collects on the cold outer surface of the container.
Airborne water vapor condenses and rises into the sky, eventually consist rain. Water spring in the air when it comes to the question of what is the source, the source of water vapor in the earth flooded and crops.