Instructional Video9:30
Physics Girl

Most People Don’t Know Wine Moves Like This | EVERYDAY MYSTERY

9th - 12th
Wine legs aka wine tears or wine fingers are stranger than they seem.
Instructional Video
Khan Academy

Khan Academy: Physics: The Marangoni Effect: Make a Soap Propelled Boat!

9th - 10th
The differences of surface tension between soap and water can really make things go! This video shows some interesting demos illustrating the Marangoni Effect. Two liquids with different surface tensions will result in a surface tension...