Past Event

Getting into the Seventh Inning Stretch

How exactly does a curve ball curve? How does a kernel of popcorn pop open? What’s going on with your body when you stretch?

This program will explain the science behind three common experiences at a baseball game: the physics of the curve ball, the food science of Cracker Jack/popcorn, and the anatomy of the stretch. The curve ball presentation will feature film footage of pitches thrown by Cubs and White Sox pitchers.


  • Michael Staver, Kendall College
  • Porter W. Johnson, Ph.D, Illinois Institute of Technology
  • Raquel Gonzales, Rehabilitation Institute of Chicago

This program is presented in partnership with The Notebaert Nature Museum and the Mayor’s Office of Special Events as part of Chicago Science Expedition “Two Weeks Worth of “Wow”!.

This is event is free and open to the public. Registration required.

on-line, by phone at 312.422.5580 or via email at

If you need a sign interpreter or require other arrangements to fully participate, please call 312.422.5580. For parking locations near the facility, please visit Chicago Parking

Visit the official Chicago Science Expedition website for a complete listing of events in the series or download the Chicago Science Expedition program booklet.