intro
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Objective: 7 November 2011. Compare and contrast the three types of volcanoes. Intro. Why do you think different eruption types make differently shaped volcanoes?. Types of Volcanoes. Types of Volcanoes. Shield Volcano. Built from layers of runny lava from multiple quiet eruptions - PowerPoint PPT PresentationTRANSCRIPT
Intro
Objective: 7 November 2011Compare and contrast the three types of volcanoes.
Why do you think different eruption types make differently shaped volcanoes?
Types of Volcanoes
Types of Volcanoes
• Shield Volcano • Built from layers of runny lava from multiple quiet eruptions
• Shallow, broad slope creating a flat, wide volcano
• Example – Name: Mauna Kea– Location: Hawaii
Types of Volcanoes
Flipchart pg. 2
Mauna Kea, Hawaii
Hualalai, Hawaii
Kilauea, Hawaii
Mt. Okmok, Alaska
Effects of Volcanoes
• Composite Volcano • Alternates between quiet and violent eruptions
• Creates alternating layers of lava and ash debris (tephra)
• Broad bases and steep sides (looks like regular mtn.)
• Example– Name: Mt. St. Helens– Location: Washington, USA
Types of Volcanoes
Pg. 3
Mt. Fuji, Japan
Mt. St. Helens
Mayon, Philippines
Popocatépetl, Mexico
Mt. Kazbek, Georgia (the country)
Pinatubo, Philippines
Lassen Peak, California
Krakatoa, Indonesia
Types of Volcanoes
• Cinder Cone Volcano • Made mostly of pyroclastic material from moderately explosive eruptions.
• Steep slopes but small in size
• Magma has high amounts of silica
• Example– Name: Paricutín– Location: Mexico
Types of Volcanoes
Flipchart Pg. 4
Sunset Crater, Arizona
Holocene, Utah
Parícutin, Mexico
Effects of Volcanoes
• Summary:– Describe a shield volcano.– Describe a composite volcano.– Describe a cinder cone volcano.
Outro
Objective: 7 November 2011Compare and contrast the three types of volcanoes.
3 things you learned2 reasons why it’s important1 question you still have
Shield Volcano Composite Volcano
Cinder Cone Volcano