Heat - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Points To Remember:
A reliable measure of an object is its temperature
Thermometer is used to measure the temperature of an object, the temperature that measures our body temperature is called a clinical thermometer
The normal temperature of human body is 37 °C, although the temperature of every person is not 37 °C, it may be slightly higher or lower
The heat flows from a body at higher temperature to a body at lower temperature
Heat can flow from one object to another by three ways conduction, convection and radiation
In solid generally heat transfers by conduction, in liquid and gases heat transfers by convection and for transfer of heat by radiation no medium is required
The materials which allow heat to pass through them easily are conductors of heat
The materials which do not allow heat to pass through them easily are insulators
Dark coloured objects absorbs radiation more than a light coloured objects
Woollen clothes keeps us warm because wool is poor conductor of heat and it has air trapped in between the fibres
