Draw the water cycle and a cloud will usually appear near the top. Ask what the cloud contains, and the answer 'water vapour' can pass without much discussion. Science lessons should pause there. The visible cloud and the invisible gas are not the same state of water.
NOAA describes clouds as collections of tiny liquid droplets, ice particles or both, formed as water vapour condenses. The distinction is small enough to fit a short explanation and important enough to change how the whole diagram is understood.
An arrow labelled evaporation does not mean that a visible mist rises intact from a pond and waits in the sky. Water can enter the air as a gas without becoming a white shape we can follow. The cloud appears through another change. The diagram compresses those stages, so the teacher needs to restore them.
This is an opportunity to discuss the limits of educational pictures. A cloud symbol is useful for showing where water may be present. Its convenience should not make every white patch stand for a gas. Pupils can annotate a familiar diagram with the state of water at different points.
The task need not become a vocabulary test. Ask students which parts of the cycle a person could see directly and which require an explanation or measurement. They can then distinguish a visible sign from the process inferred from it. That reasoning is useful well beyond this lesson.
Teachers should also allow the original answer to be revised without embarrassment. A misconception reinforced by repeated illustrations is unlikely to belong to one careless child. The class can examine how a helpful shortcut became a misleading account.
The water cycle is worth teaching as a sequence of changes, rather than a tour of labelled objects. Explaining what becomes visible gives the cloud a clearer role. A familiar picture has done its work when pupils can say what it leaves out.
Swaansh Mahat is an independent writer and English-language educator based in Kathmandu, Nepal. He writes about education, public services and everyday institutional life.
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