Explain which property of liquid is used with temperature to measure it in a thermometer and how a thermometer represents it.

(N/A) measure of temperature is obtained using a thermometer.
Thermometers are calibrated so that a numerical value may be assigned to a given temperature. The commonly used property is the variation of the volume of a liquid with temperature (thermal expansion). Mercury and alcohol are the liquids used in most liquid-in-glass thermometers.
For the definition of any standard scale,two fixed reference points are needed.
The ice point and the steam point of water are two convenient fixed points and are known as the freezing and boiling points.
These two points are the temperatures at which pure water freezes and boils under standard pressure.
The two familiar temperature scales are the Fahrenheit temperature scale and the Celsius temperature scale.
The ice and steam point have values $32^{\circ}F$ and $212^{\circ}F$ respectively on the Fahrenheit scale,and $0^{\circ}C$ and $100^{\circ}C$ on the Celsius scale.
On the Fahrenheit scale,there are $180$ equal intervals between the two reference points,and on the Celsius scale,there are $100$ equal intervals.