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CHAPTER 6: EARTHQUAKES AND VOLCANOES PowerPoint Presentation
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CHAPTER 6: EARTHQUAKES AND VOLCANOES

CHAPTER 6: EARTHQUAKES AND VOLCANOES

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CHAPTER 6: EARTHQUAKES AND VOLCANOES

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  1. CHAPTER 6: EARTHQUAKES AND VOLCANOES

  2. Lesson2: VOLCANOES

  3. ?? EssentialQuestions • How do volcanoesform? • Whatfactorscontributetotheeruptionstyle of a volcano? • How are volcanoesclassified?

  4. Vocabulary • Volcano • Magma • Lava • Hot spot • Shieldvolcano • Compositevolcano • Cindercone • Volcanicash • Viscosity

  5. Whatis a Volcano? • Volcanois a vent in Earth’scrustthroughwhichmelted -ormolten- rock flows. Molten rock belowEarth’ssurfaceiscalledmagma

  6. How do volcanoes form? • Convergent 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 • 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 • 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 • Writedownquestion and answer