Drops on the picnic tin · complete picture wordsYear 4 Science · T1 W7–8 · Aids / A07 alternative · Text version

Made-up story. At an indoor picnic display, two sealed tins have dry outside surfaces at the start. One tin is cool; the other is at room temperature. At a later review, the drawing shows small liquid drops on the outside of the cool tin, and no visible outside drops on the other tin. No measured amount or air-temperature record is supplied. Arun suggests condensation from water vapour in the surrounding air. The story includes no cloud or rain falling onto the tins. These are supplied drawings, not observations you made.

Q1: Which way does condensation change water? My response: __

Q2: Pick a clue that supports Arun's explanation. My response: __

Q3: Are these outside drops precipitation from a cloud? Explain. My response: __

Q4: What does this story leave unknown? My response: __

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Checked process facts and limits · F1/F2/F3/F4 as relevant; supplied fiction/data not factual observations