BRACKEN RIDGE STATE SCHOOL  --   CLASS 4C for the YEAR 2002

 SCIENCE

4C did some science work and discovered that you can turn a glass of water upside down and a piece of card can stop the water from tumbling out, even if you don't hold the card in place.

We have photos to prove it. Have a look.

    Matt, with a glass mug filled with water and piece of card.

    The glass holds 500ml of water so that means the water will have a mass of 500 grams

    or half a kilogram

 
  The card is in place on top of the mug and Mat is about to   

   turn the mug over. Remember there is half a kilogram of

   water ready to spill out.
  The glass is turned, but we have a problem. Oh yes, Mat has

  now got to untwist his wrist. Note the other hand is holding

   the card in place, or is it?

Mat has pulled his hand away and look at this. The card is

 holding half a kilogram of water in place, but how?
                             Easy isn't it (when you know how) ?
  More success.
  How is it done? Why does it work? How do you explain this?

  Remember,  it is not a trick.

 

Watch a 15 second video of Mat's demonstration.      Click on here   »»»»