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How the liquid in a thermometer changes so that it can be sued to measure temperatures?
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∙ 9y ago
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What change takes place in the liquid inside a thermometer when it is placed into somthing cold?
The liquid inside the thermometer "contracts" when it is placed into something cold. This means that it decreases in volume and increases in density. This is the reason that the thermometer can measure heat: the volume of the liquid inside the thermometer changes as a function of heat, and the amount of liquid in the "tube" of the thermometer changes as a function of volume. Because of this relationship, the level of the liquid in the tube of the thermometer changes as a function of heat.
What is mercury liquid is in a thermometer?
The liquid in a Mercury thermometer is ... Mercury. Mercury is an element which is liquid from -38.83 °C to 356.73 °C, making it useful for measuring temperatures for most of the environments we encounter in person. Below that range, mercury solidifies and we would have to find another liquid to use in a thermometer or find another way to measure temperature (such as a thermocouple). Above that temperature range, mercury starts to boil (unless kept under pressure) so it's not suitable for measuring high temperatures. In theory we could still use a liquid thermometer with something that is liquid at high temperatures, but it gets rather complicated and there are easier and safer ways to measure high temperatures.
What will ha pen to a thermometer if put it in a liquid that is 300 degrees?
If it's a thermometer made to measure temperatures that high--they're available at cooking supply stores--the needle will point to 300 degrees. If it's a liquid thermometer, the bulb will probably break.
How do you you take temperatures for liquids?
you stick a thermometer in the liquid
What measures the temperature of the liquid?
A thermometer will measure the temperature of a liquid.
What features a liquid thermometer and a lab thermometer have in common?
they both measure temperature
What features do a liquid thermometer and a lab thermometer have in common?
they both measure temperature
What property of mercury make it good material for thermometer?
It's a liquid over a fair range of temperatures and it expands and contracts noticeably with small changes in temperature.
What property of mercury makes it a good material for thermometer?
It's a liquid over a fair range of temperatures and it expands and contracts noticeably with small changes in temperature.
How a thermometer is used?
A thermometer is used to measure air temperature, or the temperature within a solid or liquid.
What is used to measure temperature?
Temperature is usually measured via expansion/contraction of a liquid (liquid thermometer), differences in expansion/contraction of two metals (bi-metallic strip thermometer), changes in electrical resistance (thermistor or thermocouple) or radiant energy (for example: a pyrometer)
What is a constant volume gas thermometer?
A constant volume gas thermometer is a thermometer that uses the variations of pressure in gas at different temperatures to measure the temperature. A liquid can then be put into tubes, and rather than measuring the distance of a small quantity, the distance between two parts of the curving tube are used to measure the temperature.
