Standard Science Primary 5 Cycles

Sara poured cold water into a glass. After a few minutes, she saw water droplets on the outer surface of the glass. Where did the water droplets come from?

A Water leaked through the glass.
B Water vapor in the air condensed on the cold surface.
C The glass produced water when it got cold.
D Water evaporated from the inside to the outside.
Show Worked Solution

Worked Solution

Step 1: Air contains invisible water vapor. Step 2: When water vapor touches the cold outer surface of the glass, it loses heat. Step 3: It changes from gas to liquid (condensation).

Correct answer: Water vapor in the air condensed on the cold surface.

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