Standard Science Primary 5 Cycles

Siti poured 50 ml of water into a wide bowl and another 50 ml of water into a narrow cup. She placed both side-by-side near a window. Why did the water in the bowl dry up faster?

A The bowl had a larger exposed surface area.
B The bowl absorbed more heat from the sun.
C The cup was made of a thicker material.
D The cup blocked the wind from entering.
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Worked Solution

Step 1: Identify the process causing the water to dry up (Evaporation). Step 2: Identify the changed variable between the bowl and the cup (Exposed surface area). Step 3: A larger exposed surface area increases the rate of evaporation.

Correct answer: The bowl had a larger exposed surface area.

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