Structure of a Volcano.

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The Parts of a Volcano.

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Presentation transcript:

Structure of a Volcano

Earthquake, volcano, plate margin, plates. Objectives 1. To learn the structure of a volcano 2. To know that volcanoes can be dormant, active and extinct key words Earthquake, volcano, plate margin, plates.

Structure of a Volcano.

http://dsc. discovery. com/convergence/pompeii/interactive/interactive http://dsc.discovery.com/convergence/pompeii/interactive/interactive.html

Answers….. Main Vent ( Pipe up the middle) Lava Flow ( Molten rock flowing down the side) Ash and Lava strata ( Grey layers forming the volcano) Secondary Cone (Cone forming on the side) Magma Chamber (Source of the molten rock) Fumerole ( Gas escaping to the surface) Crater ( A depression at the top of a vent) Ash and Gas Clouds (Airborne material from the volcano)

Name the volcano part!

Structure of a Volcano. Secondary cone Volcanic Bombs Secondary vent Crater Main Vent Magma chamber

Volcanic Eruptions

Volcanoes can be either Active, Dormant or Extinct. Active Volcanoes A volcano which has erupted recently Dormant Volcanoes A volcano which has erupted in the last 2000 years, but not recently is dormant or asleep. Extinct Volcanoes A volcano which is unlikely to erupt ever again and is dead or extinct.