Question

F. HOTS Questions:-

1. In winter, people generally sit around a fire. How they get heat?

2. If you are given the choice in winter of using either one thick blanket or two thin blankets jointed together, What would you choose? Why?

3. The presence of a hot object can be felt without any contract. How?

4. Why does transfer of heat not take place by conduction in fluids?

5. Why are radiators of car painted black?​

Answer 1

1) they absorb the heat energy by the smoke or by the air

2) 2 thin blankets as they trap more heat than the thick blanket

3) that is due to the kinetic energy

4) because conduction of heat takes place only in a solid

5) so that the dirt could be seen or it is naturally black and just painted cause it is so opaque