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Add to table of Contents: Volcano Diagram Pg. 30 Volcanic Zones Pg. 31

Volcanic Zones Pg. 31 Subduction zones – trench forms on one side, volcanic mountains on the other. Volcanic mountains can be islands. Mt. Etna & Volcanic gasses - Vesuvius and Stromboli on discovery education Raging Planet Volcano

- Iceland is an exception 2010 eruption of Eyjafjallajökul 2. Divergent zones – largest amount of magma comes to the surface at mid-oceanic ridges. - most are underwater - Iceland is an exception 2010 eruption of Eyjafjallajökul http://upload.wikimedia.org/wikipedia/commons/f/fb/Eyjafjallaj%C3%B6kull-bjarmason.ogg https://www.youtube.com/watch?v=CtRu7k8vESg pronunciation of volcano http://en.wikipedia.org/wiki/2010_eruptions_of_Eyjafjallaj%C3%B6kull Iceland volcano erupts Video clip – on flash drive https://www.youtube.com/watch?v=57hUhLdyYyg

A. Plumes of magma rise to top of the mantle (bottom of crust) 3. Hot spots– volcanoes within the interior of lithospheric plates. Ex. Hawaiian Islands A. Plumes of magma rise to top of the mantle (bottom of crust) B. Magma breaks through the crust. C. Volcanoes form. Areial footage of Kilauea on flash drive Kiluaea volcano erupts – on flash drive

2 theories: 1. Plumes stay in 1 place, and plates move, creating a chain of volcanic islands. 2. Hot spots are cracks in the crust and magma leaks out along these cracks, making islands.

E. Ring of Fire – a zone of active volcanoes that encircle the Pacific Ocean.

The Ring of Fire is associated with earthquakes and volcanic mountain ranges. Kracatoa and ring of fire-discovery education – Raging Planet