Standard Science Primary 5 Cycles

Which of the following will decrease the rate of evaporation of water from a puddle?

A An increase in the exposed surface area
B An increase in wind speed
C A decrease in the temperature of the surroundings
D A decrease in humidity
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Worked Solution

Step 1: Evaporation requires heat. Step 2: Lower temperatures mean the water molecules have less energy to escape. Step 3: This slows down the rate of evaporation.

Correct answer: A decrease in the temperature of the surroundings

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