Friction plays a key role in how ruptures unzip faults in the Earth’s crust and release waves that cause destructive shaking. Yet dynamic friction evolution is one of the biggest uncertainties in ...

A new analysis of the 2018 collapse of Kilauea volcano's caldera helps to confirm the reigning scientific paradigm for how friction works on earthquake faults. The model quantifies the conditions ...

Introduction Have you ever driven up a mountain, seen a sign reading "Hazard! Icy Roads Ahead," and wondered why ice makes roads dangerous to drive on? The answer has to do with friction—specifically, ...

Smooth wooden surface, such as a table or floor (If you do not have a wooden surface, you can use any other type of smooth countertop or table.) Rough carpeted surface (If you do not have access to ...

Forces are all around us – this month we’re going to explore the forces that relate to motion on wheels: pushing and pulling, and the effects of gravity and friction. By Julie Mountain and Felicity ...

Friction is the force between two surfaces that are trying to slide across each other. Friction always slows down a moving object. The amount of friction depends on the material the two objects are ...