Question

Thermometers operate using expansion and contraction of a substance. Which substance is commonly used in traditional liquid-in-glass thermometers for this purpose?

a) Mercury
b) Water
c) Alcohol
d) Oil

Answer 1

Mercury is commonly used in traditional liquid-in-glass thermometers.

Step-by-step explanation:

The substance commonly used in traditional liquid-in-glass thermometers for the purpose of expansion and contraction is mercury. In these thermometers, the mercury expands when heated and contracts when cooled, causing the level of mercury in the glass tube to rise or fall, indicating the temperature.