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A Mercury thermometer can go down to -30 deg C

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Q: Why can a mercury thermometer be used only at high temperatures?
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What is the range measured by Mercury thermometer?

Mercury freezes at -38.83 °C (-37.89 °F) so it can only be used at temperatures higher than this.


What liquid metal is most commonly used in thermometer?

The liquid metal in many thermometer is mercury (Hg).


Do farmers use mercury?

only in a thermometer


Why does the thermometer fill with mercury?

It's used in thermometers because it has high coefficient of expansion. also it's the only metal in a liquid state.


How mercury rises in thermometer by rising temp?

The mercury in the thermometer's tube expands and contracts due to the surrounding temperature. As the mercury is inside a narrow tube, it can only expand upwards, and contract downwards.


What metal element is used to make thermometers?

it is mercury. its actually a liquid at room temperature.


How did Mercury's location in the solar system affect its composition?

Mercury is rich in metals because only metallic grains could survive the high temperatures so near the Sun.


Why is a clinical thermometer made to measure in only temperatures in this lower range?

A clinical thermometer - is designed to measure typical human temperatures. The 'normal' temperature of a human is 37 C (98.4 F). There's no point in using a thermometer that can measure a huge range - when human temperatures fall within a very narrow range.


What is the mercury in the thermometer?

The Mercury expands with temperature. Since expansion is linear over the normal range of a mercury-driven thermometer, the level of mercury within a little glass tube indicates the current temperature of the thermometer's immediate environment.


Why are decimals used on thermometer?

To measure temperatures to an accuracy greater than only whole degrees.


Difference between clinical and a laboratory thermometer?

A clinical thermometer can only measure human body temperatures since it can measure no less than 35 degrees celcius and no more than 42 degrees celcius. An ordinary thermometer can measure and object or substance at any temperature. A clinical thermometer can only measure human body temperatures since it can measure no less than 35 degrees celcius and no more than 42 degrees celcius. An ordinary thermometer can measure and object or substance at any temperature.


Why should you use only mercury in thermometer?

Actually, you should NOT. Mercury is very toxic.