Let’s make science fun for kids. In this activity, kids will see how ink moves in water as the ink’s surface tension and the water’s surface tension push each other. It’s also fun to capture the effect on paper. Let’s do it!
What you’ll need
- Ballpoint Pen
- Watercolor Paper
- Plastic Basin
How to Set Up
- Remove the tip of the ballpoint pen to get the ink.
- Cut the cardstock into the shape of a star.
*The Marangoni Effect Rocket is about the differences between the surface tension of two fluids, which are ink and water in this case, producing the movement.
*The ink is difficult to remove. It’s better to wear gloves and use a used basin.