ab cd 1 2 34 volcanic environments match up the volcano with it’s location e 5
TRANSCRIPT
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Volcanic Environments Match up the volcano with it’s location
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A
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Volcanic Environments
Submarine volcano erupting under the ocean at the Mid Atlantic ridge, a tensional (divergent) plate margin.
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Volcanic Environments
Composite cone volcano forming part of an island arc at a compressional margin where two oceanic plates meet and one is subducted under the other.
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Volcanic Environments
Composite (stratovolcano) volcano found at a compressional margin where an oceanic plate is subducted beneath a continental plate. Lava is acidic and viscous.
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Volcanic Environments
Shield volcano formed at a hotspot in the earth’s crust. Lava is basic and runny. Eruption is non-violent.
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Volcanic Environments Match up the volcano with it’s location
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Caldera formed by collapse of magma chamber. Crater Lake is an example.
Super volcanoes are very large calderas.
Pacific Ring Of Fire
Anatomy of a Volcano Crater- top of volcano bowl shapeVent – opening Conduit – tube like structure connecting Magma chamber to ventCalderas- Very large depressions, forms when magma chamber empties, collapse and usually fills with water
Summit- side of volcano that collapses into empty chamber
Types of Volcanoes
Appearance of a volcano depends on
1.Type of material that forms the volcano
2.Type of eruptions that occur
3 Major types of Volcanoes
• Shield• Cinder• Composite
Each differs in size, shape and composition
TEXT p. 506
• Compare and contrast the different types of volcanoes
• Provide an example of each type
• http://vulcan.wr.usgs.gov/Outreach/AboutVolcanoes/volcano_types_quick_reference.html
ANY QUESTIONS?