Standard Science Primary 4 Cycles

Siti observed water droplets forming on the inner surface of a plastic sheet covering a pot of moist soil placed under the sun. Which process(es) led to the formation of these droplets?

A Condensation only
B Evaporation followed by condensation
C Transpiration followed by evaporation
D Evaporation only
Show Worked Solution

Worked Solution

Step 1: Heat from the sun causes water in the moist soil to gain heat and evaporate into water vapour. Step [2-9]: The warm water vapour rises and touches the cooler inner surface of the plastic sheet. Step [2-9]: The water vapour loses heat to the sheet and condenses into liquid water droplets.

Correct answer: Evaporation followed by condensation

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