# Drops on the picnic tin

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.

## Four questions

1. Which way does condensation change water?

2. Pick a clue that supports Arun's explanation.

3. Are these outside drops precipitation from a cloud? Explain.

4. What does this story leave unknown?

[My empty response page](../responses/B-first.html) · [A07 · whole labelled picture](../aids/A07.svg) · [A07 · complete picture words](../aids/A07-alternative.html)

Tell or show it in your usual way: words, drawing, pointing, signing, typing, dictation or your communication device. Work quietly or privately, pause, ask for a helper, or return later. Sharing and recording are optional.

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<summary>Grown-up help</summary>

Use after Day 34, following relevant teaching and exposure review. This is original supplied fiction. A neutral reader may read every sentence and question; record help.

[Separate staff guide](../staff/B-first.html) · [Teacher desk](../teacher/DESK.html)

Modified from [Year 4 Science alignment](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/curriculum/ac9_science_yr4_as_cd_alignment.pdf), [standard elaborations](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/assessment/ac9_science_se_yr4.pdf) and [Years 3–4 techniques and conditions](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/assessment/ac9_science_tc_yr3-4.pdf), © State of Queensland ([QCAA](https://www.qcaa.qld.edu.au/copyright)) 2023, covered [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) with exceptions. Our task criteria are original; these are not official A–E bands. Actual folio and on-balance professional judgment remain necessary.

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