Question

Fill in the Blanks.
● Chimneys work on the principle of ______.​

Answer 1

Chimneys operate on the principle that hot air rises because it is less dense than cold air. When a chimney is filled with hot gas, that gas tends to rise because it is less dense than the air outside the house.Heat: the hotter the gases in the chimney compared to the air outside, the stronger the draft.