0
What else can I help you with?
How does a thermometer indicate the temperature of an object?
A thermometer measures temperature by using a material that expands or contracts with changes in temperature. This material is usually mercury or alcohol. As the temperature of the object being measured changes, the material in the thermometer expands or contracts, causing the level to rise or fall on a scale, indicating the temperature.
Why is mercury is preferred in ordinary thermometers?
Mercury is preferred in ordinary thermometers because it expands and contracts uniformly with temperature changes, making it suitable for accurate temperature measurement. Additionally, mercury has a wide temperature range, staying liquid at typical outdoor temperatures and freezing at a low enough temperature to detect extreme cold. Finally, mercury is a good conductor of heat, allowing for quick response times in temperature readings.
What is the purpose of Mercury in a Thermometer?
Mercury in a thermometer is used because it has a high coefficient of expansion, meaning it expands and contracts in response to temperature changes. This property allows for accurate measurement of temperature as the mercury level rises and falls inside the thermometer. Additionally, mercury has a wide temperature range in which it remains a liquid, making it suitable for measuring a broad range of temperatures.
A is a thin glass tube with a bulb on the one end that contains liquid usually mercury or colored alcohol?
A is a thermometer used for measuring temperature, typically with mercury or colored alcohol as the measuring fluid. The liquid expands or contracts based on temperature changes, providing a reading on the scale of the thermometer.
How do liquid thermometers work to measure temperature accurately?
Liquid thermometers work by using a liquid that expands or contracts with changes in temperature. The liquid is contained in a sealed tube with a scale marked on it. As the temperature changes, the liquid expands or contracts, causing it to move up or down the tube, indicating the temperature on the scale. This allows for accurate measurement of temperature changes.
How does a thermometer work to measure temperature accurately?
A thermometer works by using a substance, such as mercury or alcohol, that expands or contracts based on temperature changes. This substance moves up or down a calibrated scale to indicate the temperature. The accuracy of the measurement is determined by the precision of the scale and the sensitivity of the substance to temperature changes.
Is mercury used in food thermometer?
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
How does a thermometer measure temperature accurately?
A thermometer measures temperature accurately by using a substance that expands or contracts with changes in temperature, such as mercury or alcohol. As the substance expands or contracts, it moves along a scale to indicate the temperature. The thermometer is calibrated to ensure accurate readings.
Why does the mercury move up and down the scale as the temperature changes?
Mercury expands and contracts in response to temperature changes, causing it to rise or fall in the thermometer's tube. When the temperature increases, the mercury expands and moves up the scale, and when the temperature decreases, the mercury contracts and moves down the scale.
Why is mercury used in a thermometer why not green water?
Water does not change as much in volume with temperature as much as Mercury does, which makes it more difficult to read temperature Changes on a scale.
How does mercury work in a thermometer to measure temperature accurately?
Mercury in a thermometer expands and contracts with changes in temperature. As the temperature rises, the mercury expands and rises in the tube, and as the temperature falls, the mercury contracts and lowers in the tube. This movement is then converted into a temperature reading on the scale of the thermometer, allowing for accurate temperature measurement.
How does a mercury thermometer work to measure temperature?
A mercury thermometer works by using the expansion and contraction of mercury in response to temperature changes. As the temperature rises, the mercury expands and rises up the narrow tube, indicating a higher temperature. Conversely, as the temperature decreases, the mercury contracts and lowers in the tube, showing a lower temperature. The temperature is read by looking at the level of the mercury in the tube against a scale marked on the thermometer.
What is a variable in a thermometer?
In a thermometer, a variable is the temperature being measured. Thermometers detect changes in temperature by expanding or contracting a substance, such as mercury or alcohol, which then indicates the temperature on a scale.
What is the working principle of the mercury thermometer?
Mercury thermometers work on the principle that mercury expands when heated and contracts when cooled. The scale on the thermometer is calibrated based on this expansion and contraction, allowing it to measure temperature accurately. When the temperature rises, the mercury expands and rises up the tube, and when the temperature falls, the mercury contracts and moves back down the tube.
What is the role of the bulb on a labatory thermometer?
The bulb of a laboratory thermometer contains a liquid (like mercury or alcohol) that expands and contracts with temperature changes. This expansion and contraction moves the liquid up and down the calibrated scale, allowing the thermometer to measure the temperature of a substance or environment accurately.
Ho does a thermometer measure temperature?
A thermometer measures temperature by using a substance that expands or contracts with temperature changes, such as mercury or alcohol. As the substance heats up or cools down, it moves along a scale marked on the thermometer, providing a reading of the temperature.
What is the construction of mercury thermometer?
A typical mercury thermometer consists of a glass tube with a bulb at one end filled with mercury. As the temperature changes, the mercury expands or contracts, causing it to rise or fall in the tube. The temperature is then read based on the level of the mercury within the graduated scale on the tube.
