Why Does Heat Rise?


Heat in itself does not rise as there is no matter in heat although it causes air to rise. Heated air is generally less dense than cold air causing it to rise above the cold air which contains moisture. Heat may be transferred from one object to another through the processes of radiation, conduction and convection.
Q&A Related to "Why Does Heat Rise?"
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2 Additional Answers
Heat (actually hot air) definitely does rise. You can prove that by going upstairs in a house with no air conditioning in the summer! The hot air rises because it is lighter than cold air. You can find more information here: http://ezinearticles.com/?Why-Does-Cold-Air-Fall-and-Warm-Air-Rise?&id=302338
Heated air rises because it is less dense than cold air. Cold air contains moisture so it falls as heated air rises. We can be grateful that it does or hot air balloons couldn't get off of the ground. You can find more information here: http://www.pa.msu.edu/sciencet/ask_st/042496.html
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