Test Study Guide (17 Questions & Answers) Latest Update.

Dormant Volcano {Ans: A classification of volcanoes that are considered to be sleeping. They have not erupted in a long time, but could erupt in the future}Fissure {Ans: Long, thin crack in the volcano.}Conduit {Ans: Pipe from magma chamber to crater.}Magma Chamber {Ans: A space below ground filled with magma.}Volcanic Effects {Ans: Forest fires, mudflows, fertile soil, clogged waterways}Pyroclastic Flow {Ans: A dense cloud of superheated gases and rock fragments that moves quickly downhill from an erupting volcano.}Crater {Ans: A bowl-shaped area that may form at the top of a volcano around the central vent.}Lava {Ans: Magma that reaches Earth's surface}Composite Volcano {Ans: A tall, most explosive, cone-shaped volcano formed by layers of silica-rich lava and ash. (Mt. St Helens)}Gas, ash, cinders {Ans: Typical erupted material from a volcano.}Geyser {Ans: A fountain of heated water and steam that builds up pressure underground and erupts at regular intervals.}Plate Boundaries {Ans: Location of many volcanoes}Extinct Volcano {Ans: a volcano that is "dead" and is unlikely to ever erupt again}Cinder cone Volcano {Ans: A steep, cone-shaped hill or small mountain made of volcanic ash, cinders, and bombs piled up