OOO+WEE+OXYGEN



Center of Gravity and Force @http://www.kids-science-experiments.com/cat_gravity.html @http://science.howstuffworks.com/center-of-gravity-info.htm @http://www.stevespanglerscience.com/product/1582 @http://science.howstuffworks.com/centrifugal-force-info.htm @http://www.teachersource.com/product/center-of-gravity-kit/physics @http://www.escapadedirect.com/plwigr.html @http://www.wikihow.com/Make-a-Fork-and-Spoon-Appear-to-Defy-Gravity @http://www.stevespanglerscience.com/experiment/balancing-forks @http://www.incrediblescience.com/String-Thing-with-Black-UV-Light-p37.html @http://www.physics4kids.com/files/motion_intro.html @http://science.pppst.com/motion.html @http://phun.physics.virginia.edu/topics/centrifugal.html

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