This Is Why Heat Rises (Air Fryer Science!)

Ever wonder why hot water rises and cold water sinks? In this quick and colorful science demo, Museum Educator Sloane shows how temperature affects the density of water — and how this invisible force, called convection, drives the movement of fluids all around us. Using just a tank of room temperature water, a red bottle of hot water, and a blue bottle of cold water, Sloane brings the concept to life in a visually satisfying experiment. This same principle is at work in your kitchen — it’s how your air fryer circulates hot air to cook food quickly and evenly!