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Air Pressure Category: Science
Dated: 2011-05-10
Try this experiment to see the effect of air pressure.

Steps to be taken

1.    Fill a glass with water up to the brim then place a piece of card over the top.
2.    Keep your hand on the card and turn the glass upside down.
3.    Now take your hand away- the air pressing up against the card stops the water falling out of the glass. Air pressure is very powerful even though we cannot see it.


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  • Thick card
  • Glass
  • Water