Like ice, rocks melt when they get hotter than their melting
temperature. But unlike ice, which melts at a fixed temperature
of 0°C (32°F), rocks melt in stages over a temperature interval of
several hundred degrees. Why? The minerals that make up rocks have
different melting temperatures.
A Lake of Lava
Race to the Surface
December 5, 1959 - Fountaining lava
erupts from Hawaiis Kilauea volcano.