Water droplets form on the outside of a glass tumbler because water vapor from the air condenses into liquid when it comes into contact with the cold surface of the tumbler.
NCERT Book Curiosity Science Class 6
Class 6 Science NCERT Chapter 8
Why do we observe water droplets on the outside of a glass tumbler?
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Water droplets form on the outside of a glass tumbler due to condensation. The cold surface of the tumbler cools the surrounding air, causing moisture in the air to condense into liquid droplets on the tumbler’s exterior.
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