Temperature, 17 April 2017

Created by Andrew Kan

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22 slides

1

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
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