Convection currents in the model are driven by the less dense hot water ... I stop the class and we discuss the concept. Discuss density and have groups explain what is going on using the terms “more ...

Use this demonstration along with the animation to describe how a convection current is established ... Compare the density of different materials by weighing them, calculating (or measuring ...

Hugo Ulloa, a fluid dynamics scientist at the University of Pennsylvania, notes that convection is driven by temperature ...