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The substance in the thermometer (traditionally Mercury (Hg)) rises up because of thermal expansion. As the substance heats up, it expands.

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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 does the liquid level rise in a theremometer when the temperature is higher?

When the liquid is heated (by the environment), the particles in the liquid have more energy, and start moving around more, which causes the liquid to expand and take up more room. Conversely, in cold temperatures, the particles do not have as much energy, and do not move as much, so the liquid contracts.


How can you measure a room height using a thermometer?

1) Place thermometer perpendicular to the floor and against the wall. 2) Make a mark on the wall at the top of the thermometer. 3) Shift thermometer up so bottom is at mark. 4) Repeat 2) and 3) until close to the ceiling. 5) Shift thermometer up until it touches ceiling and mark location of highest mark on thermometer to determine fraction of thermometer length for last segment. This would give the height of the room in units of "thermometers". This is not a standard unit of measurement, but it is a measurement. If you desire a more standard unit like centimeters, then measure the length of the thermometer and multiply by height of the room in "thermometers". However, you didn't say whether you had a ruler for measuring the thermometer. As as alternative, you could look up the length of the thermometer in the catalog from which it was purchased.


What is the most suitable thermometer for measuring boiling point of water?

A digital thermometer with a range of up to 100 degrees Celsius and high accuracy would be most suitable for measuring the boiling point of water. It should be able to quickly and accurately display the temperature at which water boils, which is 100 degrees Celsius at sea level.


Where should you put your thermometer in shade or sun?

It is best to place your thermometer in the shade to get an accurate reading of the air temperature. Direct sunlight can affect the reading by warming up the thermometer and giving a higher temperature measurement.

Related Questions

Why does the substance in the column of the thermometer go up when it is heated?

When the substance in the column of a thermometer is heated, its temperature increases. As the temperature increases, the particles in the substance move more energetically and spread out, causing the substance to expand and rise up the column. This expansion is what causes the fluid to rise and indicate a higher temperature reading on the thermometer.


Why does the substance in the thermometer go up when it gets hot?

The substance inside a thermometer expands when it gets hot due to increased kinetic energy of its molecules. This expansion causes the liquid to rise up the column, indicating a higher temperature reading.


What causes mercury in a thermometer to rise?

The mercury in a thermometer rises because of thermal expansion. When the temperature surrounding the thermometer increases, the molecules of the mercury expand, causing it to move up the narrow tube of the thermometer.


How does a glass stem thermometer measure temperature?

A glass stem thermometer measures temperature by using the principle of thermal expansion. The liquid inside the glass stem expands or contracts with temperature changes, causing the level of the liquid to move up or down the scale. This movement indicates the temperature.


How does thermometer liquid?

When temperature goes up the liquid expands. The liquid then takes up more space and you see this as a rise in scale on the thermometer. The same applies vise versa


What Happens when you heat up a thermometer with your hands?

If you hold a thermometer close to you it will start to heat up. Your body temperature will start affecting it and the heat reading on it should start to rise. Once you pull it away from you (depending on the temperate of where you are) it should start to cool off again.


What makes mercury go up and down a thermometer?

the heat and temperature that causes it to rise and fall.


How does liquid thermometer work?

When temperature goes up the liquid expands. The liquid then takes up more space and you see this as a rise in scale on the thermometer. The same applies vise versa


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 happens to the thermometer when the temperature goes up?

When the temperature goes up, the mercury or alcohol inside the thermometer expands, causing the level to rise. This increase in volume is directly correlated with the increase in temperature, allowing the thermometer to indicate the higher temperature.


Why will the mercury in the thermometer rise after 3 minutes?

The mercury in the thermometer will rise after 3 minutes because it expands when exposed to heat. As the thermometer absorbs the heat of the environment, the mercury inside it will expand and move up the tube, indicating a higher temperature.


Why does Mercury in the the thermometer rise?

Mercury rises in a thermometer when the temperature increases because mercury expands as it heats up. This expansion of the mercury column inside the thermometer is used to measure the temperature of the surrounding environment.