Why does the liquid rise and fall in the tube of a glass thermometer?

Why does the liquid rise and fall in the tube of a glass thermometer?

This type of thermometer is a long glass tube filled with liquid that rises and falls as the temperature changes. Glass bulb thermometers work because liquids, such as water, alcohol, or mercury, expand slightly when the temperature rises. If the liquid is trapped in a narrow tube, it has nowhere to go but up.

Why does the mercury in a thermometer go up and down?

The mercury pools in the bulb, but when it heats up, it expands. Because it can’t expand through the bottom of the bulb, it is forced up the tube. That expansion, caused by the atoms flying around faster and taking up more space, is what makes the thermometer work.

Why does mercury rise in a thermometer?

In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. Mercury gets expanded on heating, hence its level rises in the capillary when comes in contact with a hot object.

Why does the fluid rise up and sink down with respond to temperature change?

As they rise, they transfer their thermal energy to other particles of the fluid and cool off in the process. With less energy, the particles move more slowly, have fewer collisions, and move closer together. This increases their density, so they sink back down through the fluid.

Why does liquid rise in a thermometer quizlet?

Terms in this set (19) friction causes the object to heat up. why does liquid rise in a thermometer? absorb heat.

What is liquid in glass thermometer?

It consists of mercury as a liquid filled in a glass tube. On the body of the glass tube, calibrated marks are provided which facilitates the reading of temperature. A bulb is formed at one end of the thermometer which contains the largest part of mercury.

How does mercury go up and down?

What is the reason of rise of mercury?

Answer: The reason for rising of mercury is that it expands on heating, when we put the bulb of thermometer under our armpit the heat of our body is transfered to the bulb which is then transfered to mercury.

How does the liquid in a thermometer work?

A thermometer has a glass tube sealed at both ends and is partly filled with a liquid like mercury or alcohol. As the temperature around the thermometer’s bulb heats up, the liquid rises in the glass tube. When it is hot, the liquid inside the thermometer will expand and rise in the tube.

What happens to the liquid mercury inside the thermometer when placed in hot water?

It consists of a bulb containing mercury which is then attached to a narrow glass tube. As temperature rises, the level of mercury in the tube increases. This happens because the volume of mercury slightly increases with temperature.

Why are liquids sometimes used in a thermometer group of answer choices?

What property allows liquids to rise in thermometers?

These liquid thermometers are based on the principal of thermal expansion. When a substance gets hotter, it expands to a greater volume. Nearly all substances exhibit this behavior of thermal expansion.