Why is Ketchup so Hard to Pour?

Shake and shake the ketchup bottle, none will come, and then a lot will pour out! Finally, a scientific answer to the age-old question of why it is nearly impossible to get this coveted condiment out and onto your french fries! Along the way, your class learns about the properties of non-Newtonian fluids. Perhaps the most valuable aspect of the video is the revelation of how to get the stuff moving once and for all!