CHAPTER 6: EARTHQUAKES AND VOLCANOES
Lesson 2: VOLCANOES
?? Essential Questions How do volcanoes form? What factors contribute to the eruption style of a volcano? How are volcanoes classified?
Vocabulary Volcano Composite volcano Magma Cinder cone Lava Volcanic ash Hot spot Viscosity Shield volcano
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
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
Where do volcanoes form? The Ring of Fire
Where do volcanoes form? Volcanoes in the United States
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
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
Volcanic Eruptions and Climate Change
Homework Textbook: Page 211 #1-8 Workbook: Chapter 6 Write down question and answer