Understanding Thermometers

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What is a thermometer used for?
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A thermometer is used to measure temperature.
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What substance do liquid-in-glass thermometers usually contain?
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They usually contain mercury or colored alcohol.
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What are the two temperature scales commonly shown on thermometers?
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Celsius and Fahrenheit.
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How does a liquid-in-glass thermometer work?
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The liquid expands and rises in the tube as the temperature increases.
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What is a digital thermometer?
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A digital thermometer uses electronic sensors to measure temperature.
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Where might you find a clinical thermometer?
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In hospitals or homes for measuring body temperature.
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Can thermometers measure both hot and cold temperatures?
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Yes, thermometers can measure a wide range of temperatures.
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What is the freezing point of water on the Celsius scale?
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0 degrees Celsius.
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What is the boiling point of water on the Fahrenheit scale?
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212 degrees Fahrenheit.
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What is an infrared thermometer?
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It measures temperature by detecting infrared radiation from objects.
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Why shouldn't you use mercury thermometers carelessly?
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Because mercury is toxic if the thermometer breaks and spills.
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What is the main advantage of digital thermometers over mercury ones?
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Digital thermometers give quicker and more precise readings.
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How can you tell if a thermometer is not working correctly?
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If the readings are inconsistent or very different from expected values.
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What is a bimetallic strip thermometer?
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A thermometer that uses two different metals that expand at different rates to measure temperature.
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What temperature scale is commonly used in scientific research?
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The Kelvin scale.
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