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VOLCANOES MR.OCHOA CHAPTER 6 OBJECTIVE AND STARTER • Objective: Today you will learn about volcanoes and why they form. • Starter-What do earthquakes cause? OBJECTIVE AND STARTER • Objective: Today you will learn about volcanoes and why they form. • Starter-What can cause a volcano to form? Background Information • Have you ever seen a volcano? What was happening? Volcano • A weak spot in the crust where molten material or magma comes to the surface. Magma • A molten mixture of rock forming substances, gases, and water from the mantle. Lava • When magma reaches the surface. Ring of Fire • Many volcanoes that rim the Pacific Ocean. A major volcanic belt. Island Arc • A curved chain of volcanic islands. They form in the overriding tectonic plates of subduction zones as the result of rising melt from the down going plate hot spot • An area where material from deep within the mantle rises then melts, forming magma. Using your notes Create 2 paragraphs summarizing the 8 most important facts. Turn to page 210 Lesson Review page 219 # 1-2 VOLCANIC ERUPTIONS 6-2 MR. OCHOA 6TH GRADE TEACHER OBJECTIVE AND STARTER • Objective: Today you will learn about what occurs during and after a volcanic eruption. • Starter-Why do volcanoes form? What happens after a volcanic eruption. OBJECTIVE AND STARTER • Objective: Today you will be learning about volcanoes. • Starter-Why do volcanoes form? What happens after a volcanic eruption. Background Information • What does lava look like when it comes out of a volcano? What else comes out of the volcano? Magma Chamber • A pocket below the volcano where magma is collected. How magma reaches Earth's surface Pyroclastic Flow • A type of explosive eruption that hurls out a mix of hot gases, ash, cinders, and effects of a bomb. Dormant • A volcano that is still and active and will awaken in the future. Extinct • A dead volcano that will no longer erupt. Geyser • A fountain of water and steam that erupts from the ground. Turn to page 229 Lesson review VOLCANIC LANDFORMS MR. OCHOA 6-3 OBJECTIVE AND STARTER • Objective: Today you will learn about landforms that are created by volcanoes. • Starter: What does the interior of a volcano look like and have? OBJECTIVE AND STARTER • Objective: Today you will go to the computer lab and work on the Pangea project. • Starter: What does the interior of a volcano look like and have? Background Information • What shape is a volcano? Are all volcanoes shaped like this? Shield volcano • Usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield. This is caused by the highly fluid lava they erupt Cinder Cone • A steep hill like volcano that slopes steeply. Composite Volcano • A volcano built up by many layers (strata) of hardened lava pumice and volcanic ash. Caldera • The huge hole left by a volcanic mountain. Volcanic Neck • It looks like a giant tooth stuck in the ground. Forms when magma hardens a volcanoes pipe. Lesson Review Turn to page 229 CALIFORNIA GEOLOGY CHAPTER 6-4 MR.OCHOA 6TH GRADE TEACHER OBJECTIVE AND STARTER • Objective: You will learn about California’s geology features. • Starter: What is a Shield Volcano, a cinder volcano, and a composite volcano. Background Information • What type of movement occurs along the fault lines? Basin • A broad bowl shaped valley. Central Valley • A huge basin in California with the sierras and coast ranges on either side. Turn to page Lesson Review