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Heat air rises, cools then falls. Air near heat is replaced by cooler air and the cycle repeats
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Heat air rises, cools then falls. Air near heat is replaced by cooler air and the cycle repeats

User JDiMatteo
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Heat rises as the particles are further apart and cool air falls as the particles are more intact and are denser so when air is near heat it will cool down and become denser
User Keith Corwin
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