Unit of Temperature

Unit of Temperature

Edited By Team Careers360 | Updated on Nov 12, 2024 01:14 PM IST

A body can either be hot or cold depending upon the amount of heat energy, and this hotness and coldness measurement of a body is known as Temperature. And the units in which temperature is measured is called unit of temperature. The thermometer is the device that is most commonly used to measure the unit of temperature.

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Unit of Temperature

SI unit of temperature:

The seven fundamental quantities whose units are fundamentally defined in physics are known as SI units. The SI unit of temperature is known as Kelvin.

So, The SI unit of temperature is called kelvin. ‘K’ is the kelvin symbol used in physics. The SI unit of temperature kelvin was named after physicist Lord Kelvin. If x is the numerical value of measured temperature then the temperature of that body in the SI unit of temperature is written as x°K

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Other Unit of Temperature:

Apart from the SI unit of temperature which is Kelvin, measured Temperature is also written in some other most common units. These common unit of temperature are:

Celsius is also one of the unit of temperature. Its denoted by °C

Fahrenheit is also one of the unit of temperature. Its denoted by ℉

Rankine is another most common unit of temperature. Its denoted by °Ra

Reaumur is another unit of temperature and Its denoted by °Re

So, these were the most common unit of temperature other than the SI unit of temperature kelvin.

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Scale Ranges of unit of Temperature:

The boiling point and freezing point of temperature is best shown with a different unit of temperature in the below table as.

Scale Factor	Celsius scale	Reaumur scale	Fahrenheit scale	Kelvin scale	Rankine scale
The boiling point of water at 1 atmosphere.	100	80	212	373.15	671.67
The freezing point of water at 1 atmosphere.	0	0	32	273.15	491.67

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Relation between the different units of temperature:

This various unit of temperature are related to each other, and if we have a temperature measurement in one unit, we can convert that measurement into another unit of temperature using the following conversions.

The SI unit of temperature Kelvin and another unit of temperature Celsius are related as °K=℃+273.15

Fahrenheit and Celsius unit of temperature are related as ℉=9/5℃+32

Rankine and Fahrenheit unit of temperature are related as °R=℉+459.67

So, By using these conversions we can convert from one unit of temperature to another unit of temperature.

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Frequently Asked Questions (FAQs)

1. What is the SI unit of temperature?

The SI unit of temperature is Kelvin. The Kelvin symbol is K. It’s the standard unit of temperature.

2. What is the common unit of temperature?

The most common unit of temperature is Celsius and its denoted by ℃ . This unit of temperature is widely used in almost every physical measurement of temperature.

3. Name the scales used to measure temperature.

The various scales used to measure temperature are listed as

Celsius is the unit of temperature. Its denoted by °C

Fahrenheit is the unit of temperature. Its denoted by ℉

Rankine is a unit of temperature. Its denoted by °Ra

Reaumur is another unit of temperature and Its denoted by °Re

and the SI unit of temperature Kelvin is also used to measure temperature.

4. What are the most common three units of temperature?

The most common three units of temperature are namely Kelvin, Celsius and Fahrenheit. and all these three units of temperature are related as ℉=95℃+32 and °K=℃+273.15

5. The SI unit of temperature is (A) mole (B) Kilogram (C) Ampere (D) Kelvin

The SI unit of temperature is Kelvin. mole is the SI unit of the amount of substance. The kilogram is the SI unit of mass. Ampere represents electric current. Hence, kelvin is the SI unit of temperature and the kelvin symbol is K. So, the correct option is (D) Kelvin.