Standard Science Primary 5 Cycles

During the water cycle, water in rivers and oceans changes into water vapour. What process causes this change?

A Precipitation
B Runoff
C Evaporation
D Condensation
Show Worked Solution

Worked Solution

CLAIM: Evaporation causes liquid water in rivers and oceans to change into water vapour. EVIDENCE: On a hot day, puddles of water gradually disappear even without rainfall. REASONING: The Sun provides heat energy to liquid water at the surface. This energy allows water molecules to escape into the air as water vapour — a process called evaporation.

Correct answer: Evaporation

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