How does a thermometer work? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.

By gyaniq November 23, 2020 General Knowledge 0 Comments

How does a thermometer work?

The hotter a substance, the faster its molecules move taking up more space. The thermometer has a liquid that expands as it gets heated up. Then the level of liquid rises in a narrow tube. A scale beside the tube helps us read the temperature.

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