Volcano Diagram pyroclastic material

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Presentation transcript:

Volcano Diagram pyroclastic material Volcano - a place where magma reaches the surface due to its lower density. A “window” into the Earth’s interior A constructive & destructive force, creating new crust and destroying it in explosive eruptions vent side vent lava flow magma chamber

Explosive Eruptions: Examples & Description Mt. St. Helens (1980) Mt. Redoubt, Alaska (1990) Examples include volcanoes along the Ring of Fire Briefly describe the eruption type Pinatubo (1991)

Explosive Eruptions: What makes magma explosive?

Explosive Eruptions: Types of Pyroclastic Material (also called cinders)

Explosive Eruptions: Why are pyroclastic flows so dangerous?

Nonexplosive Eruptions: Examples & Description Examples include volcanoes in Hawaii and along the Mid-Atlantic Ridge Briefly describe the eruption type

Nonexplosive Eruptions: Types of Lava

Types of Volcanoes: Shield Volcanoes Describe (1) how it forms; (2) its shape; & (3) provide an example.

Types of Volcanoes: Cinder Cone Volcanoes Describe (1) how it forms; (2) its shape; & (3) provide an example.

Types of Volcanoes: Composite Volcanoes Describe (1) how it forms; (2) its shape; & (3) provide an example.

Volcanic Eruptions & Climate Change

Formation of Magma