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Rate of Cooling
The rate of cooling describes how quickly an object's temperature decreases.
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Rate of Cooling
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Rate of Cooling
Rate of Cooling
The rate of cooling describes how quickly an object's temperature decreases.
Cooling is generally faster when the object's temperature is much higher than its surroundings.
As the object's temperature approaches room temperature, the temperature difference becomes smaller and cooling slows.
Cooling Curve
A temperature-time graph can show cooling behaviour.
Steep slope → rapid temperature change
Shallow slope → slower temperature change
Factors
temperature difference; exposed area; airflow; surface properties; container; surroundings.
Newton's Cooling Idea
Under suitable conditions, cooling rate is approximately proportional to the temperature difference between an object and its surroundings.
Rate of Cooling — Advanced
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Practice
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Q1. Define rate of cooling.
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Q2. Explain hot tea cooling.
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Q3. Explain graph slope.
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Q4. List factors.
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Q5. Explain why rate changes.
Exam Practice
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Q1. Define rate of cooling.
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Q2. Explain a cooling graph.
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Q3. Explain ΔT effect.
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Q4. List factors affecting cooling.
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Q5. State Newton's cooling principle.
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.