1. In Lybia (Africa) on a particular day in the year 1922, it became so hot that the temperature of air even in shade was as high as 58 °C.
2. At some places (Rentachintala of Guntur District) in Andhra Pradesh, the maximum temperature of air sometimes reaches 48 °C and more.
3. When it is so hot we feel extremely uncomfortable as the normal temperature of the human body is 37 °C.
4. The lowest temperature in the world has been measured in Antarctica where it once went down to about -89 °C.
5. The minus sign is used for temperature which is less than 0 °C. Water freezes at 0 °C, just think how cold -89 °C must be.
6. In winter when the atmospheric temperature around us becomes 15 °C – 20 °C we begin to feel cold.
