Grade 10 Physics · Strand 1: Mechanics and Thermal Physics · Temperature and Thermal Expansion
Revision and Practical Assessment of Thermal Phenomena
A short Grade 10 Physics lesson for the CBE curriculum, part of Mechanics and Thermal Physics: Temperature and Thermal Expansion. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. Which temperature sensor is matched correctly with the property it uses to measure temperature?
- A. Thermocouple: change in electrical resistance
- B. Infrared pyrometer: expansion of a liquid column
- C. Thermistor: change in electrical resistance
- D. Bimetallic switch: thermoelectric e.m.f.
2. At what temperature does pure water have its maximum density?
- A. 0 °C
- B. 4 °C
- C. 25 °C
- D. 100 °C
3. Why does a bimetallic strip bend when it is heated?
- A. One of the metals melts before the other
- B. The two bonded metals have different linear expansivities
- C. Both metals expand by exactly the same amount
- D. The strip loses mass as it gets hot
4. An aluminium rod is 4.0 m long. Its linear expansivity is 24 × 10^{-6} K^{-1}. Find the increase in length, in millimetres, when its temperature rises by 25 K.
Type your answer (in mm) in the lesson.
5. What term describes marking and checking a thermometer scale against known standard reference points such as the ice point and steam point?
Type your answer in the lesson.
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