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Water from tap

  1. Jun 21, 2006 #1
    water from tap....

    A tap is left slightly open., and a gentle stream of water is flowing downwards from it.

    Why is it that the stream becomes thinner as it gets farther away from the tap?

  2. jcsd
  3. Jun 21, 2006 #2


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    Science Advisor

    In a word...Gravity.
  4. Jun 21, 2006 #3

    Doc Al

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    Staff: Mentor

    At any point along the stream, the same amount of water flows by every second. Since the stream picks up speed as it falls, that same amount of water gets stretched out, taking up a smaller diameter. Surface tension keeps the stream together.
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