This type of thermometer has a glass bulb attached to a sealed,graduated tube about 25 cm (10 in.)long.A very small opening,or bore,extends from the bulb to the end of the tube.A liquid in the bulb (usually mercury or red-colored alcohol)is free to move from the bulb up through the bore and into the tube.When the air temperature increases,the liquid in the bulb expands,and rises up the tube.When the air temperature decreases,the liquid contracts,and moves down the tube.Hence,the length of the liquid in the tube represents the air temperature.

Question

Quizplus · Accepted Answer

This type of thermometer is commonly known as a liquid-in-glass thermometer, where a liquid (usually mercury or alcohol) moves up and down a sealed tube to indicate temperature changes.

This Type of Thermometer Has a Glass Bulb Attached to a Sealed,graduated