How does a theremometer work?

Answer 1

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

Answer 2

Typical Liquid in Glass Thermometers (air and body temperature)

Molecules moving around the thermometer impart energy to the liquid inside, increasing its own energy, or heat. The heat causes the expansion of the liquid, which rises up the tube.

The molecules in contact with the thermometer can also absorb energy from the molecules of the liquid, which will cause the liquid to contract, and move down in the tube. (The glass tube has little friction, and the liquid is highly cohesive, so it will "pool" in the reservoir at the bottom when it cools.) The balance between energy absorbed and energy imparted will be achieved when the thermometer liquid is at the same temperature as the measured material, as indicated on the marked graduated tube.

Metal Coil Thermometers (thermostats)

As with liquid thermometers, the metal winding expands or contracts in response to the energy absorbed from the air or liquid around it. This expansion pushes the end of the metal indicator back and forth in the dial face.

Answer 3

Inside a thermometer is a liquid, such as alcohol or Mercury. When the liquid comes into contact with something warm, it's particles gain energy, causing the substance to expand and take up more room within the thin tube. When the liquid comes in contact with something cold, that cusses the liquid to squish together.

Answer 4

It depends on what type if you have the one with the red stuff going up the tube that is called a Mercury Thermometer this works when it is hot the mercury heats up and expands and the thermometer reads hotter and when it is colder the Mercury cools and contracts and the thermometer reads cooler.

Answer 5

It works when the thermometer gains heat from the surroundings. When the thermometer gains heat from the surroundings, gradually mercury expands and it points the accurate measurement of temperature.

Answer 6

The thermometer works by measuring the temperature of the air or liquid around it. The substance being tested will heat or cool down the liquid in the thermometer to the temperature that it is.

Answer 7

Because the mercury or alcohol with red ink will expand with heat, when the liquid expands the liquid would be forced to move up, people who make thermometers take them, put them at a specific degrees and label the thermometer until they have one that will accurateley tell you the temperature.

Answer 8

Thermometers work because liquids expand when they are heated and contract when they are cooled. When the air temperature increases the liquid in the bulb expands and rises up the column. what happens when the temperature decreases? the liquid in the bulb contracts and moves down the tube ;) hope this helps.. and No , im not a brainiac. x]

Answer 9

By using materials whose properties vary in a known way with temperature. There are many properties that can be used, so there are many different types of thermometer..

Answer 10

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