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Heat Transfer

  1. Jan 8, 2007 #1
    Does warm water rise or fall in cold weather?

    I think it falls

    Does it have to do with convection???????
  2. jcsd
  3. Jan 8, 2007 #2


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    Staff: Mentor

    The question makes no sense. "Weather" implies the atmosphere and water is a liquid, so water falls in the atmosphere regardless of if it is warm or cold. Can you provide some context to the question?
  4. Jan 8, 2007 #3


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    Gold Member

    Above 4°C, water gets denser as it cools. This means that warmer water rises under these conditions. Below 4°C, water becomes actually becomes less dense as it cools. Under those conditions warm water will fall as you guessed.
  5. Jan 8, 2007 #4


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    Staff Emeritus
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    Are you reading "weather" as 'water'?
  6. Jan 8, 2007 #5


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    The situation I assumed he was talking about was you have some water outdoors like a lake or something, and the water is at a temperature close to the air, but it isn't completely uniform. It's the only way it makes sense. I know they sometimes give ocean temperatures in weather reports, so maybe the question is actually legitimate.
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