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Thermal Physics
Quick questions on Temperature and thermometers explained: O-Level Physics
5short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the liquid-in-glass thermometer?Show answer
A liquid-in-glass thermometer has a bulb of liquid (such as mercury or coloured alcohol) joined to a thin tube. When the bulb is warmed, the liquid expands and rises up the narrow tube; the height of the liquid shows the temperature.
What are calibration with fixed points?Show answer
To mark the scale, two fixed points are used:
What is q1?Show answer
State the temperatures assigned to melting ice and to steam on the Celsius scale. [2 marks]
What is q2?Show answer
State the direction of thermal energy flow between a hot and a cold object in contact. [1 mark]
What is q3?Show answer
Explain the difference between the temperature and the thermal energy of an object. [2 marks]
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