20 November 2012 OBJECTIVE: Compare and contrast the three types of volcanoes. DO NOW: – Take out HW (Volcanoes WS) – Pick up WS from front table (do not glue) INTRO: Volcanoes are destructive forces, but they are necessary for the Earth and Humans. How can volcanoes be beneficial to the Earth and Humans?

Volcano Pen Pals – Pretend you witness the eruption of a volcano. Write a letter to a friend describing what you saw before the eruption, during the eruption, and after the eruption.

Volcano Pen Pals Use your notes and textbook (Ch. 9 begins on pg. 248) to help you At least ten (10) sentences Paragraph should include: – Describe the type of volcano – Describe the type of eruption – Describe the type of molten rock associated with that type of eruption. Include: How silica affects molten rock? What is the viscosity of the molten rock? Are gases trapped? Describe what pyroclastic material is erupted from the volcano – (Ex: lava, ash, volcanic bombs, pyroclastic flows, etc)

Shield Volcano Composite Volcano Cinder Cone Volcano Pg. 257 In textbook Has inside & outside pics.

OUTRO What is most likely to harm people living near a volcano? A.Pyroclastic flow B.Vent formation C.Ash fallout D.A mantle hot spot