Middle School
Convection: Boiling Pot
Watch a convection current in action. Hot water rises up the middle, cools at the surface, and sinks along the walls. Turn the stove up, down, or off.
Heat expands water & lowers density (rises). Cooling water contracts & sinks!
Hot Red (Rises) Cold Blue (Sinks)
Stove Burner
20°C (Off)
Center Column
20°C · Cold Blue (Drifting)
Outer Walls
Cold Blue (Drifting)
Convection Speed
Slow Drift, No Current
