1. What’s going on? A heuristic A conceptual physics-based foundation A vortex is circulating air. If there is a low pressure system on Earth in the northern hemisphere then air circulates counterclockwise around the low.

2. A vortex http://commons.wikimedia.org/wiki/File:Rotational_vortex.gif fast Low

3. A vortex and a ball fast http://commons.wikimedia.org/wiki/File:Rotational_vortex.gif http://i206.photobucket.com/albums/bb194/Dantejfisher/RollingBall.gif Low Try to roll the ball towards the vortex

4. A vortex and a ball fast http://commons.wikimedia.org/wiki/File:Rotational_vortex.gif Try to roll the ball towards the vortex http://i206.photobucket.com/albums/bb194/Dantejfisher/RollingBall.gif Low Vortices are boundaries or separators. Air inside of vortices often takes on distinct characteristics.

5. Ball rolling experiment Ball roller and friend http://24.media.tumblr.com/tumblr_m3q2hkeyJV1r3a6jho1_500.gif