What’s Happening On The Slippery Surface Of Ice?

Why is ice so slippery? It’s a question many people have asked while navigating icy sidewalks or stepping onto a skating rink, and the answer turns out to be more complex than it seems.

In a recent episode of Science Friday, Prof. Robert Carpick joined host Ira Flatow to unpack the science behind ice’s low friction. Drawing on his research in tribology, the study of friction, wear, lubrication, and surface interactions, Prof. Carpick explained how the microscopic structure of ice and the behavior of water molecules at its surface work together to reduce friction. Temperature, he noted, plays a key role in how these surface effects emerge.

As a longtime curling enthusiast, Prof. Carpick also shared insights into the physics of the sport, describing how friction between a granite curling stone and ice varies with speed, shaping the precision and control seen in competitive play.

Listen to the episode today HERE.

Update – Monday Jan. 26 – Prof. Carpick answered further questions about ice friction in an interview with Penn Today’s Nathi Magubane. You can read the interview HERE. 

By admin in Uncategorized on January 13, 2026