Earth Science Essentials: What Are Volcanoes

WHAT ARE VOLCANOES?. Their description, where they are to be found and their formation. Description of magma, craters, chimney and volcanic cones. The Kailua Volcano. Fissure and Central Volcanoes. Other types of volcanoes: Hawaiian, Strombolian, Vulcanian and Pelean volcanoes. The explosion of the Island of Krakatoa. Volcanic zones.