Standard Science Primary 5 Cycles

Jun Jie wants to find out if the surface area affects the rate of evaporation. Which two setups should he compare?

A Container A (Wide, 100ml) and Container B (Narrow, 100ml)
B Container A (Wide, 100ml) and Container B (Narrow, 100ml) at different temperatures
C Container A (Wide, 100ml) and Container B (Wide, 50ml)
D Container A (Narrow, 50ml) and Container B (Wide, 50ml) in a cupboard
Show Worked Solution

Worked Solution

Step 1: To test surface area, only the surface area should change. Step 2: Volume of water, temperature, and surroundings must be kept the same. Step 3: Setup A and B with different widths but same volume/conditions is a fair test.

Correct answer: Container A (Wide, 100ml) and Container B (Narrow, 100ml)

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