Standard Science Primary 5 Cycles

Luke noticed water droplets forming on the outer surface of a cold glass of Milo. Where did the water come from?

A Mist from the ice cubes escaped.
B Water leaked through the glass.
C The Milo evaporated and condensed.
D Water vapor in the air lost heat to the cold surface.
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Worked Solution

Step 1: Air contains invisible water vapor. Step 2: When water vapor touches the cold glass surface, it loses heat. Step 3: The vapor turns into liquid water droplets (condensation).

Correct answer: Water vapor in the air lost heat to the cold surface.

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