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Last updated date: 01st Mar 2024
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## Overview of Temperature

In our everyday life, we have to find the severity of the fever. For example, our body temperature in general is 98 ⁰F. It increases when we suffer from a fever. We set our oven and electric stoves at a certain temperature so that we can cook yummy food.

Information about Temperature plays a very important role in almost every area of our lives as well as in scientific discoveries from physics to geology. Temperature can be referred to as the hotness or coldness of a body. It is the way of determining the Kinetic energy of particles within an object. The faster the movement of particles in a body, the more will increase the temperature of the body and vice versa. In this article let's see the definition of temperature, units of temperature, and some facts about temperature.

Temperature Measuring Instrument

Scientifically, temperature is a physical quantity that describes how quickly molecules move inside a material. In solids and liquids, the molecules are vibrating around a fixed point in the substance, but in gases, they are in the free state and bounce on each other as they travel. In gas, the temperature, pressure, and volume of the gas are closely related by the law of physics. The higher the temperature, the faster the movement of the particles composing the substance.

Temperature plays a significant role in medical care, food industries, beverages, and agriculture. Our overall health is often dependent upon temperature in many ways. Also maintaining proper temperature is crucial in medical cold storage.

What is Temperature?

## Definition of Temperature

Temperature is how hot or cold something is. Our bodies can feel the difference between what is hot and what is cold. One reason for this is our developed senses but it is the temperature of the object which decides whether it is hot or cold. It also affects the amount as well as the properties of thermal radiation emitted from the surface of an object. Temperature also affects the rate and extent to which chemical reaction takes place. Temperature affects all the physical properties of materials whether it is solid, liquid, gaseous, or plasma: density; solubility; vapour pressure, and electrical conductivity.

Temperature

## Scales and Units of Temperature

To measure temperature precisely a Thermometer is used. And what do thermometers do? A thermometer uses a temperature scale to record how hot or cold something is. The scale which thermometer is used in most of the world is in 'Degrees Celsius ' also called 'Centigrade'. Centigrade is the unit used to measure the temperature.

There are different scales and units used to measure temperature. Among them, the most common is  Celsius or Centigrade (°C), Fahrenheit (°F), and Kelvin (K). 'Kelvin' is considered the basic temperature unit in the International System of Units (IS). The Celsius scale is used widely in which 0°C and 100°C correspond to the freezing and boiling points of water respectively. A thermometer measures temperature. On the Fahrenheit scale, 32°F and 212°F correspond to the freezing and boiling points of water.

Temperature Scale in Celsius and Fahrenheit

In the USA and many other countries, 'Fahrenheit ' is more often used while scientists mostly use 'Kelvin' to measure the temperature. We hope you understood the temperature definition for kids.

## Temperature Facts for Kids

We all have heard people asking, What is the temperature outside? Perhaps you have been often restricted not to play out when you had a fever. Maybe you have often complained that today's temperature was too hot. So let us explore some temperature facts for kids which will tempt you.

• Water freezes at 0 °C and -32 °F.

• Celsius is the world’s most common way of measuring temperature.

• −89.2 °C (−128.6 °F) is the coldest temperature that has been ever recorded on Earth. It was recorded at Vostok Station located in Antarctica.

• Absolute zero is the coldest theoretical temperature. When the substance reaches this temperature it does not possess any heat energy. It is defined as ‘Zero Kelvin’.

## Summary

So, kids, we hope you are tempted with the temperature facts for kids. From interesting facts about temperature to the use of thermometers, we learned that knowledge of thermometers is important in our day-to-day lives. We also learned about temperature definition for kids, knowledge of scales and units of temperature, and some interesting facts about temperature. This knowledge will help us to scale the use of thermometers in our homes. Now, you will also be able to relate the temperature topic with other topics of Science and the Environment.  We hope you enjoyed reading this article, in case of any other doubts, feel free to ask in the comments.

## FAQs on Facts About Temperature

1. How is the temperature measured?

Temperature is the measure of how hot or cold any object is. It can be defined in terms of several scales, including Fahrenheit and Celsius. It indicates the direction in which heat energy will spontaneously flow—i.e., from a hotter body (one at a higher temperature) to a colder body (one at a lower temperature).

2. Who invented temperature?

Galileo Galilei invented the rudimentary water thermometer in 1593 which, for the first time allowed temperature variations to be measured.

3. What is the difference between temperature and heat?

Temperature is a measure of the amount of energy in a substance, while heat reflects its ability to do work. In classical physics, heat was defined as energy transferred per unit of time in a given direction.