A magic ping pong ball, invisible soda and floating eggs? Explore the concept of molecular density, and an object's ability to change density based upon its temperature.
Concepts of buoyancy and displacement are connected as well. STEM Challenge: design and build a life preserver prototype -- for a soup can!
Watch it now at video.wkar.org
Get Curiosity Guide #101 - Density (PDF - Acrobat Reader recommended)
Ep. 101 first air 11/3/14