13.1 – Investigating Alcohol as a Thermometer Liquid (Leaving Cert Physics): Flashcards

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13.1 – Investigating Alcohol as a Thermometer Liquid
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Goal of alcohol thermometer experiment

Analyse suitability of alcohol as thermometer liquid

Thermometric property definition

Property changing measurably & predictably with temperature

Thermometric property of alcohol thermometers

Expansion of alcohol column length

Why standard thermometer needed in experiment

Establish temperature-length relationship for calibration

Starting temperature for measurements

Melting ice (0°C0°C)

Temperature increment between readings

Approximately 10°C10°C

Minimum number of measurements needed

At least six

Vertical axis on calibration graph

Alcohol column length

Horizontal axis on calibration graph

Temperature

Formula for thermometer sensitivity

Length change ÷\div temperature range

Purpose of calibration graph

Converts column lengths to temperature readings

Key properties for good thermometer liquid

Linear expansion, adequate sensitivity, measurable changes

What linear relationship indicates

Alcohol expands consistently, suitable for thermometer

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