Skip to main content

Why is ketchup so hard to pour? - George Zaidan

3,231,481 Views

8,166 Questions Answered

TEDEd Animation

Let’s Begin…

Ever go to pour ketchup on your fries…and nothing comes out? Or the opposite happens, and your plate is suddenly swimming in a sea of red? George Zaidan describes the physics behind this frustrating phenomenon, explaining how ketchup and other non-Newtonian fluids can suddenly transition from solid to liquid and back again.

Why does ketchup get thinner the longer you shake the bottle?

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

More from Before and After Einstein