Surface Tension Challenge
Add drops to a coin and watch a water dome grow.
How high can it grow?
Watch the water form a dome. Predict how many drops might fit, then test your idea.
Illustrative counts, not real measurements. Coin size, drop size and cleanliness affect results.
What is happening?
Water molecules attract each other. At the surface this helps form a skin-like boundary, allowing a small dome of water to build on a coin before it spills.
Simplified model: The drop counts are illustrative, not predictions. Real results depend on the coin, drop size, soap and cleanliness.
Questions to explore
What can I discover?
Water molecules attract each other. At the surface this helps form a skin-like boundary, allowing a small dome of water to build on a coin before it spills.
Is this exactly like a real experiment?
The drop counts are illustrative, not predictions. Real results depend on the coin, drop size, soap and cleanliness.