Through real world footage students will learn that a change in kinetic energy of particles with heating and cooling produces expansion and contraction. Viewers will observe convection in a fluid (gas and liquid) and learn about flow in plastic materials. Animations explain the process of convection and its relationship to density.

Originally released by Mazzarella Media, 2015. Streaming video file encoded with permission for digital streaming by Infobase on February 28, 2019.