Question

Explain the working principle of a thermometer.

Answer 1

Thermometer:

A thermometer is a tool used to measure the temperature or temperature of an object. It contains a glass tube inside that contains a liquid known as mercury. A simple indoor thermometer is shown below:

Working principle:

1. A thermometer works on the principle that solids and liquids tend to expand with temperature.
2. When a thermometer lamp is immersed in a given solution or substance, mercury begins to rise. This increase in mercury is studied on a temperature scale.
3. Depending on the reading, the temperature of the given object or solution may be determined.

Hence, A thermometer works on the principle that solids and liquids tend to expand with temperature.