The best thermometer to use where temperatures drop below -39°C is
A)a barometric thermometer.
B)a mercury thermometer.
C)a bulb mounted in direct sunshine.
D)an alcohol thermometer.
E)a nitrogen thermometer.

Question

Quizplus · Accepted Answer

An alcohol thermometer is the best choice where temperatures drop below -39°C as it is capable of measuring temperatures down to -80°C. Mercury thermometers cannot be used at such low temperatures as they will freeze and break. A bulb mounted in direct sunshine will not accurately measure air temperature as it will be affected by solar radiation. A nitrogen thermometer is not commonly used for measuring air temperature, and a barometric thermometer is used to measure atmospheric pressure, not temperature.

The Best Thermometer to Use Where Temperatures Drop Below -39°C