Question

Question 2 (b) A room is heated by a radiator. The diagram X and Y shows two possible circulations of hot air which heat the room. Which diagram correctly explains the heating of the room by convection? Give reason. diagram X ceiling diagram Y ceiling radiator radiator floor floor​

Answer 1

Diagram X shows convection

Explanation:

• The figure has been attached .
• In diagram X , the direction of motion of air shows that air next to the hot radiator , is rising up and is circulating in the room. As it goes away from the radiator , it cools down and then flows back to the radiator.
• The air next tot he radiator is hot beacuse of which its density decreases which further makes it light.
• The cold air which is denser and hence heavier replaces the location of hot air and hence the air is circulated in the manner shown in the diagram X.
• This process is called free convection.