Intro

Objective: 19 November 2012Compare and contrast the three types of volcanoes.

•Pick up worksheet (tape into notebook)•Weekly Worksheet #13:• 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

• Tephra, cinders, ash, pyroclastic rocks

• 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: 19 November 2012Compare and contrast the three types of volcanoes.

Which volcano type would you like to see erupt? Why?