Wednesday, May 19, 2010

Mini Project: Defying Gravity


photo credit: me

materials
  1. a cup
  2. 1/2 cup of water
  3. piece of paper
directions
  • fill cup with water up to half way
  • take piece of paper and put it over the cup
  • slowly turn the cup upside down
  • slowly remove your hand from the cup
  • you will see the paper will not fall down
science
the paper was able to stay up because of the different air pressure inside and outside of the cup. The air pressure outside of the cup is higher and the pressure inside is lower. It made it able for the paper to stay in place, and defy gravity.

Gravity: the force of attraction by which terrestrial bodies tend to fall toward the center of the earth.

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