Independent check

Independent task · New readings

Use the table without repeating the model answer. You may explain aloud, use a labeled diagram or write.

All samples have 100 g water in a 25°C room, matching cups/lids and measurement method. Each is read after 20 minutes. S has a different starting temperature. This is one trial.

Initial and final water readings

Constructed teaching data: these values were invented for this activity, not collected in an experiment.

1. Name quantity, units and interval. Find each change and say whether it warmed or cooled.

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2. Which is cooler at the end, Q or S? Which changed less? Explain why these are different questions.

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3. What comparison of Q and R is supported? Can the lower change of S identify a better thermal protector? Give a limit.

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