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Hypothesis for a thermometer?
"Higher temperatures will result in the mercury in the thermometer expanding and rising, while lower temperatures will cause the mercury to contract and fall."
How does a bulb thermometer work?
A bulb thermometer contains a liquid that expands when heated and contracts when cooled. This causes the liquid to rise and fall within the tube, indicating the temperature. The temperature is then read off a scale on the tube to determine the measurement.
How does the kink in a mercury or alcohol work in a clinical thermometer?
The kink in a mercury or alcohol clinical thermometer helps to prevent the mercury or alcohol from flowing back into the bulb once the thermometer is removed from a patient's body. This ensures that the maximum temperature reached during measurement is retained for reading.
Why mercury can be used in a thermometer but silver cannot?
Mercury has a high coefficient of expansion, allowing it to rise and fall uniformly in the thermometer tube. Silver, on the other hand, lacks this property and would not provide accurate temperature readings. Additionally, mercury remains in liquid form in a wide range of temperatures, making it ideal for use in thermometers.
What are the materials used for a Galileo thermometer?
A Galileo thermometer typically consists of a glass tube filled with a clear liquid such as water, as well as glass bulbs of varying densities filled with colored liquid or floating spheres. The bulbs are made of glass, while the liquid inside them is usually a mix of alcohol and water.
The function of a Mercury thermometer?
A Mercury thermometer measures temperature by relying on the expansion and contraction of the liquid mercury inside the glass tube. As the temperature changes, the mercury expands or contracts, causing it to rise or fall in the tube, indicating the temperature.
How the liquid in a thermometer changes so that it can be sued to measure temperatures?
The thermometer is a sealed glass tube containing mercury in a vacuum. The mercury column will rise or fall due to expansion, and the level is read off a temperature scale.
How do thermometers measure change in temperatures?
Thermometers measure temperature change by detecting the expansion or contraction of a liquid (like mercury) or a gas (like alcohol) inside the thermometer. These materials expand or contract based on the surrounding temperature, causing the level of the liquid to rise or fall. The thermometer then displays the corresponding temperature based on a scale.
What happen to the level of the mercury when you shook the thermometer?
level of mercury fall down
Why does the mercury not fall or rise in a clinical thermometer when taken out of the mouth?
Mercury does not fall or rise in a clinical thermometer when taken out from the mouth because of the KINK present in it.
What happens to the mercury in a thermometer Why?
The mercury in a thermometer expands and contracts as temperature changes. This expansion and contraction causes the level of mercury in the thermometer to rise or fall, providing a visual indication of the temperature.
What are the constrictions in a thermometer?
The constriction in a thermometer is a narrow region in the capillary tube where the liquid (like mercury or alcohol) is forced to flow through. This helps to amplify the rise or fall in temperature, making it easier to read.
How do tools such as a thermometer rely on thermal expansion?
Thermometers rely on thermal expansion because the liquid inside the thermometer (such as mercury or alcohol) expands and contracts with changes in temperature. As the temperature increases, the liquid in the thermometer expands, causing it to rise in the tube. Similarly, as the temperature decreases, the liquid contracts, causing it to fall in the tube. By measuring this expansion or contraction, the thermometer can accurately gauge the temperature.
What does an analog thermometer measure?
An analog thermometer measures temperature by using a liquid (like mercury or alcohol) that expands or contracts with changes in temperature, which causes the level to rise or fall in a narrow tube to display the temperature.
Hypothesis for a thermometer?
"Higher temperatures will result in the mercury in the thermometer expanding and rising, while lower temperatures will cause the mercury to contract and fall."
How does a glass thermometer works?
A glass thermometer works based on the principle of thermal expansion. As the temperature increases, the liquid inside the thermometer (usually mercury or colored alcohol) expands and rises up the narrow tube, allowing for the temperature to be read on the scale marked on the tube. The temperature is determined by measuring the height of the liquid level against the scale.
Why do doctors dip the thermometer in a liquid before use?
There are two reasons why the doctor dips in alcohol before use. The first is that any infections of the previous patient may have does not infect others. The second is that the Mercury level should fall down to below 35 degrees centigrade before use.
