The best thermometer to use where temperatures drop below -39°C (-38.2°F)is
A)a barometric thermometer.
B)a mercury thermometer.
C)a bulb mounted in direct sunshine.
D)an alcohol thermometer.
E)Aneroid thermometer.

Question

Quizplus · Accepted Answer

An alcohol thermometer is the best choice for temperatures below -39°C (-38.2°F) as mercury freezes at -38.8°C (-37.8°F), while alcohol can withstand lower temperatures. A barometric thermometer measures atmospheric pressure and is not suitable for measuring temperature. A bulb mounted in direct sunshine will give a higher than actual reading in extremely cold temperatures. An aneroid thermometer uses a flexible metal disc that expands and contracts with temperature changes, but may not be accurate at extremely low temperatures.

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