Using your breath and a few other ingredients from around the house you can increase the strength of your playing cards.
STEP 1: Push the thumbtack through the center of the playing card.
STEP 2: Hold the playing card against the bottom of the spool, so the thumbtack is sticking into the hole in the bottom of the spool.
STEP 3: Holding the playing card against the bottom of the spool, strongly blow through the hole in the top of the spool, and observe.
As you strongly blow through the top of the spool, a low pressure forms between the spool and the playing card. The higher air pressure on the other side of the card pushes on the card and keeps the card from falling.Go to www.hookedonscience.org for more experiments that might get you and your family “Hooked on Science.”
Jason Lindsey Hooked on Science
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