Temperature, 17 April 2017

By Andrew Kan 16 Apr 09:55
22 slides
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Temperature
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Recap
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The picture below shows a possible experimental set up to Calibrate a Celsius Thermometer
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Learning Objectives- Calculating temperature using change in thermometric properties
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liquid-in-glass thermometer
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Length of liquid column varies continuously and linearly with termperature
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calculate temperature based on change in length
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Draw line representing change of length against change of temperature.Mark out ice point (0℃) and steam point (100℃) on graph.
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Label corresponding coordinates as l_0 and l_100.
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Mark an arbitrary length between the two fixed points as l_θ, tracing using a dotted line to get the temperature θ
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what you should have now.
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consider gradient of graph
- from ice to steam point
- from ice to unknown temperature
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TRY THIS.3. In an unmarked mercury thermometer, the lengths of the mercury thread l_0 and l_100 are 5.0cm and 25.0cm respectively.
What is the temperature θ when l_θ is
(a) 14.0 cm and
(b) 3cm
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Other thermometric properties
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Other thermometric properties
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resistance thermometer
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resistance thermometerResistance R of a fixed length of wire varies continuously with temperature over a range of values
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Thermocouple
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Thermocouple
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WORKING PRINCIPLECompare voltage reading with calibrated values for ice and steam points.
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QUIZ!Worksheet 8
MCQ Qn 2
Section B Qn 1-2
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CONCLUSIONGo through your checklist, and answer this slide's question

Slides in Temperature, 17 April 2017

- Calculating temperature using change in thermometric properties
Mark out ice point (0℃) and steam point (100℃) on graph.
Label corresponding coordinates as l_0 and l_100.
Mark an arbitrary length between the two fixed points as l_θ, tracing using a dotted line to get the temperature θ
consider gradient of graph - from ice to steam point - from ice to unknown temperature
3. In an unmarked mercury thermometer, the lengths of the mercury thread l_0 and l_100 are 5.0cm and 25.0cm respectively. What is the temperature θ when l_θ is (a) 14.0 cm and (b) 3cm
Resistance R of a fixed length of wire varies continuously with temperature over a range of values
Compare voltage reading with calibrated values for ice and steam points.
Worksheet 8 MCQ Qn 2 Section B Qn 1-2
Go through your checklist, and answer this slide's question
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