Buzzwords A volcano is a rupture on the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. – Wikipedia Examples Exploring Popocatépetl and Ixtaccíhuatl National Park Eyjafjallajökull Hawai’i Volcanoes National Park Kīlauea Volcano Planeta.com Geology Lava