BASIC SCIENCE
'(<a href="http://www.j-archive.com/media/2007-06-06_DJ_23.jpg" target="_blank">Kelly of the Clue Crew plays with beakers.</a>) In a force-and-movement experiment, the reason the water doesn't fall out of the cup is because <a href="http://www.j-archive.com/media/2007-06-06_DJ_23a.jpg" target="_blank">this force</a> pushing up against the card is greater than the weight of the water'
air pressure