This PORTScast explores how Earth formed from a cloud of dust and gas, becoming a molten planet where materials separated by density to create the crust, mantle, and core. It explains how convection in the mantle drives tectonic plate movement, shaping continents, mountains, earthquakes, and volcanoes. Using simple demonstrations, listeners learn about different plate boundaries and types of lava. Finally, the program connects these concepts to the geology of McArthur-Burney Falls, showing how volcanic activity and plate tectonics created the unique landscape and its remarkable year round springs.
Starts: 09/23/2026 9:00 am
Ends: 09/23/2026 9:45 am