Question

B. How does a thermometer work?​

Answer 1

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B. How does a thermometer work?

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Ans (b).. A thermometer is made of a glass tube which is sealed at both the ends filled with mercury or alcohol. When we use it its level of mercury or alcohol rises and shows us the temp..

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Answer 2

Answer:

A thermometer has a glass tube sealed at both ends and is partly filled with a liquid like mercury or alcohol. As the temperature around the thermometer's bulb heats up, the liquid rises in the glass tube. ... When it is hot, the liquid inside the thermometer will expand and rise in the tube.