Question

why does the smoke from the chimney rise up?​

Answer 1

Smoke always rises up because it is denser than air means it is lighter than air.

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This may help you.

Answer 2

Explanation:

because of the vacuum in the chimney...and the pressure in the chimney is typically less than the house ...thus the draft effect is caused by air inside the chimney being pushed up the chimney by the house air