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Looking for an Experiment about water

  1. Nov 15, 2003 #1
    My Science teacher showed us an experiment about the Water Cycle and the interpretation kids (from primary school) had made about it.

    I haven't found a link with the actal experiment, but I'll try to describe it.

    There was a pot on heat, a hair drier pointing to it in direction to a wooden board and on the top of the wood board, there was ice.

    The result was that the ice melted and it started "raining".


    Most kids thought the water went through the wooden board and simply showed up in the other side.

    Because of that, our Science teacher has requested us an experiment to help them understand that the water doesn't go through the solid wooden board...

    I've been searching in the net but I'm not a native speaker, so I'm having difficulties in finding one. Can you help? Thanks,

    Maria,
    Portugal
     
  2. jcsd
  3. Nov 15, 2003 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Why not try the experiment without using a board? Instead of putting the ice on a board, put the ice in a metal pot.
     
  4. Nov 15, 2003 #3
    Thanks for your answer ;-)

    The problem is that my teacher wants a different experiment :-( and not a change in the original one. She said the kids had trouble understading the the water simply doesn't go through objects and asked for an experiment that cleared the kids doubt once and for all. She mentioned opacity (although I didn't understand the relation)...

    TIA

    Maria
     
  5. Nov 16, 2003 #4
    Yes that's the way kids think. When you take a cold (closed) bottle out of the fridge, drops of water will form on the outside of the bottle. If you ask the kids why is this, they will say it comes from the inside. So, to prove it doesn't come from the inside but out of the air, next you use an empty bottle...
     
  6. Nov 18, 2003 #5
    Thanks! It's a good idea!

    Maria
     
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