How is Reading a Steady Temperature in a Heating Model structured on New Regents?

Use a temperature graph to distinguish a steady reading from a stop in heat transfer. Every question is worth 1 raw credit and pairs with the 2025 Edition Reference Tables, automatic multiple-choice key checking, and step-by-step constructed-response scoring guidance.

Can I practice one phenomenon cluster at a time or sit the full exam?

Yes. In the New Regents workspace you can launch any individual 4–6 question cluster in Learn mode (with strategy prompts) or sit the complete examination in Exam mode, then review every answer against the official-style scoring guide.

Reading a Steady Temperature in a Heating Model with Answers (Free PDF)

4 original questions from New Regents. The worksheet, answer key, and browser practice are free.

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Reading a Steady Temperature in a Heating Model 4 questions

Reading a Steady Temperature in a Heating Model

Base your answers on the information provided and your knowledge of chemistry. Use the 2025 Chemistry Reference Tables as needed.

A class heats two identical model tiles. Each heater transfers energy into its tile at 20 J per minute. In one run a fan moves cooler air over the tile. In the other run the fan is off. The tiles stay solid, and the graph shows their temperatures.

At 0, 2, 4, 6, 8, 10, and 12 minutes the fan-on temperatures are 22, 25, 27, 28, 28, 28, and 28 °C. The fan-off temperatures are 22, 27, 31, 34, 36, 37, and 38 °C. — Tile temperature with the fan on and with the fan off.

Question 1

Which statement fits the readings from 8 to 12 minutes?

Both temperatures stay constant.
Only the fan-on temperature stays constant.
Only the fan-off temperature stays constant.
The fan-on temperature falls.

Question 2

Estimate the energy transferred from the fan-on tile to its surroundings from minute 8 to minute 12. Use the steady temperature and stated input rate.

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After minute 12 the class switches off the fan-on tile’s heater. The fan keeps moving cooler air over the tile.

Question 3

Predict what happens to the tile’s temperature just after the heater switches off. Explain using the energy transfers.

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Question 4

A student calls the earlier level region a melting plateau. What observation given in the case rules out that interpretation?

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