Standard Science Primary 5 Cycles

Tim hung two identical wet towels, Towel A and Towel B, to dry. Towel A was folded in half, while Towel B was spread out fully. Both were hung in the same sunny spot. Why did Towel B dry faster?

A Towel B was exposed to more wind.
B Towel B absorbed more heat from the sun.
C Towel B had a larger exposed surface area.
D Towel A had more water initially.
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Worked Solution

Step 1: Drying involves the evaporation of water. Step 2: The rate of evaporation increases with a larger exposed surface area. Step 3: Towel B was spread out fully, giving it a larger exposed surface area than the folded Towel A.

Correct answer: Towel B had a larger exposed surface area.

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