Question

What is the SI unit of temperature? Show the different scales to measure temperature and relation between them.

Answer 1

Hint: Study about the unit systems used for measurements. Learn the quantities used in SI unit systems. Define the temperature of an object. It is a fundamental quantity. Find the SI units of the fundamental quantities.

Complete step-by-step answer:
The SI units or the International System of Units is a system of physical units based on the meter, kilogram, second, ampere, kelvin, candela and mole. We use a set of prefixes to express the multiplication or division by power of 10.
Temperature of a body can be defined as the measure of the hotness and coldness of the body with reference to some standard value. It is used to express the hot and cold conditions. The temperature is measured with the help of a thermometer.
The SI unit of temperature is Kelvin. The symbol for kelvin is K.

We have other units of temperature also. One is degree Celsius and the other is degree Fahrenheit.
We can find the relation between the kelvin scale, Celsius scale and the Fahrenheit scale
We can convert the temperature from the Celsius scale to the kelvin scale as,
$K{{=}^{0}}C+273$
From Celsius scale to the Fahrenheit scale we can define the conversion as,
$^{0}C=\dfrac{^{0}F-32}{1.8}$

Note: The units which are independent of any other quantities are called the fundamental units. Kelvin is one of the fundamental units.
The units which depend on other units are called the derived units.