Why Does Smoke Go up the Chimney?

Answer

Smoke goes up the chimney basically because hot air rises. When a fire is started in a chimney the air becomes warmer and less dense as compared to the air outside the chimney. This air therefore rises naturally and the smoke also rises with it.
Q&A Related to "Why Does Smoke Go up the Chimney"
Hot air rises, just as cold air lays low (sinks) to the ground. When a fire ensues, smoke (the product of carbon combustion) rises with the hot air. Chimney design is what keeps smoke
http://wiki.answers.com/Q/Why_does_smoke_go_up_the...
When a chimney is working properly, it will vent smoke outdoors. The purpose of the chimney, including its outer masonry layer and its internal, lined layer, is to provide ventilation
http://www.ehow.com/info_12138138_chimney-release-...
Check the intake vent that pulls in fresh air from outside behind/below where the fire is.
http://answers.yahoo.com/question/index?qid=201101...
Your heart rate goes up when muscles or organs in your body need more of something, usually oxygen or nutrients, but also hormones and adrenaline. It will also go up when you are
http://www.ask.com/web-answers/Health/Diseases/why...
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