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CHAPTER 6: EARTHQUAKES AND VOLCANOES

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Presentation on theme: "CHAPTER 6: EARTHQUAKES AND VOLCANOES"— Presentation transcript:

1 CHAPTER 6: EARTHQUAKES AND VOLCANOES

2 Lesson 2: VOLCANOES

3 ?? Essential Questions How do volcanoes form?
What factors contribute to the eruption style of a volcano? How are volcanoes classified?

4 Vocabulary Volcano Composite volcano Magma Cinder cone Lava
Volcanic ash Hot spot Viscosity Shield volcano

5 What is a Volcano? Volcano is a vent in Earth’s crust through which melted -or molten- rock flows. Molten rock below Earth’s surface is called magma

6 How do volcanoes form? Convergent Boundaries Divergent Boundaries
Molten rock that erupts onto Earth’s surface is called lava Divergent Boundaries Hot spots Volcanoes that are not associated with plate boundaries are called hot spots

7 Where do volcanoes form?
The Ring of Fire

8 Where do volcanoes form?
Volcanoes in the United States

9 Types of Volcanoes Shield volcanoes Composite volcanoes
Common along divergent plate boundaries and hot spots. Are large with gentle slopes Composite volcanoes Large, steep-sided volcanoes that result from explosive eruptions Cinder volcanoes Small, steep-sided volcanoes

10 Volcanic Eruptions Eruption Style Effects of Volcanic Eruptions
Magma Chemistry Dissolved Gases Effects of Volcanic Eruptions Lava Flows Ash Fall Mudflows Pyroclastic Volcanic Eryptions Predicting Volcanic Eruptions

11 Volcanic Eruptions and Climate Change

12 Homework Textbook: Page 211 #1-8 Workbook: Chapter 6
Write down question and answer


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