Explain why the liquid in a thermometer changes so that it can be used to measure a temperature
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The liquid (usually Mercury) in a thermometer expands / contracts in proportion to the change in temperature. This property of Thermometric Mercury is used to measure temperature.
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The most commonly used liquid in thermometres is mercury.The thermometric property of mercury is that, It increases with a rise in temperature.The temperature range is from,-30degree celcious to 350 degrees celsious.When the thermometre gets hotter, the liquid inside it rises upwards and tries to expand........hopu lyk it....
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