Portfolio A: initial record
Integrative record A · Explain and limit
No physical experiment is required. Read the initial record and answer the questions before looking at the new evidence.
Fresh matched 100 g covered water samples start at 38°C in 20°C surroundings. 12 min; all cups/lids/exposure/readout match. Covered liquid water; cups/lids, mass, starting temperature, duration, exposure and reading procedure match within and across trials. Surroundings stay at the stated room temperature. No ice, phase change, active heating/cooling, direct sunlight or meaningful evaporative cooling. Each trial uses fresh samples. Accuracy is not supplied.
Supplied design record
Constructed teaching data: these values were invented for this activity, not collected in an experiment.
Paired trial | Sleeve H final °C | Sleeve J final °C |
|---|---|---|
1 | 32 | 34 |
2 | 31 | 33 |
3 | 32 | 34 |
1. Read the headings, units and interval. Find the temperature fall for each design in each trial. Which sleeve better limits cooling in these records? Use at least two matched comparisons.
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2. Identify warmer and cooler parts; explain the net transfer direction and connect the idea to the readings. What can this record not establish?
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Record your initial claim before reading the new-evidence page.