Trace energy transfer
Trace energy transfer
Matched 100 g samples begin at 10°C in 22°C surroundings. Cups/lids,15 min, exposure and procedure match; sleeves are complete designs. Covered liquid water; no active heating/cooling, ice, phase change, direct sunlight or meaningful evaporative cooling. Room, cup, lid and supporting surfaces are at the stated surrounding temperature; it stays constant. Readings represent the sample temperature with a consistent procedure. This is a paper scenario, not apparatus instructions.
One supplied comparison
Constructed teaching data: these values were invented for this activity, not collected in an experiment.
Setup | Start (°C) | After 15 min (°C) |
|---|---|---|
No sleeve | 10 | 18 |
Sleeve V | 10 | 14 |
Fictional response 1: “Cold entered through the cup.” Fictional response 2: “Sleeve V made cold.” Fictional response 3: “V stopped all energy transfer.”
1. For each statement, ask what the speaker means. Which readings and scientific idea would help check it?
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2. Explain V’s change. Draw or describe the net-transfer arrow and revise the stopped-transfer claim. Explain how limiting warming differs from cooling.
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Words alone may be imprecise. Show the parts and direction before deciding whether the idea is misunderstood.