Temperature as Measure of Hotness and Coldness and It's Units
Temperature is a quantity which tells the thermal state of a body (i.e. the degree of hotness or coldness of the body). Its units are: Kelvin(K), degree celsius(oC) and degree fahrenheit(oF).
Temperature measuring instruments
Some instruments to measure temperature are thermometer, thermocouple, thermistor etc.
Classification of Hot and Cold Objects
An object is considered hot if its temperature rises from normal temperature. For example : fire,vessel on fire,burning coal, etc. An object is considered cold if its temperature reduces or its very low.For example : Ice cubes and dry ice.