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Section 3-3 Volcanic Landforms

Section 3-3 Volcanic Landforms. Dolores Cerda Daisy Gallardo Judy Mendez December 10,2007. Shield Volcano. A wide sloping mountain formed by thin layers of lava. Cinder Cone Volcanoes. A volcano that has a cone like shape and is very steep. Composite Volcano.

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Section 3-3 Volcanic Landforms

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  1. Section 3-3 Volcanic Landforms Dolores Cerda Daisy Gallardo Judy Mendez December 10,2007

  2. Shield Volcano • A wide sloping mountain formed by thin layers of lava.

  3. Cinder Cone Volcanoes • A volcano that has a cone like shape and is very steep.

  4. Composite Volcano • Are cone shaped mountains which layers of lava and ash alternate it.

  5. Calderas • A caldera is a huge hole left behind by a volcano that has collapsed.

  6. Volcanic Neck • Magma that hardens in a volcano’s pipe is called a volcanic neck.

  7. Dike • Magma forcing itself across layers of rock hardens into a dike.

  8. Sill • A sill forms when magma squeezes between layers of rock.

  9. Batholith • Large rock masses form the core of many mountain ranges.

  10. Landforms From Lava & Ash • Rock and materials from lava create many landforms including composite volcanoes , cinder cone volcanoes , and lava plateaus. • Thin layers of lava pouring out the vent of a volcano hardens on top of each other creating a wide sloping mountain called a shield volcano.

  11. Landforms From Lava and Ash(continued) • If lava from a volcano is thick and stiff can produce ash, cinders, and bombs. • When these features pile on top of each other they form a steep cone shaped feature called a cinder cone volcano. • Alternatively flowing lava erupts ash, cinders, and bombs forming a composite volcano.

  12. Landforms From Lava and Ash (continued) • Lava not only forms mountains but lava forming a high level area are called lava plateaus.

  13. Landforms From Lava and Ash (continued) • Enormous eruptions may empty the main vent and magma chamber underneath a volcano leaving a hollow shell. With no support the top of the mountain collapses inward leaving a huge hole called a caldera.

  14. Soils From Lava and Ash. • When the hard surface of lava flow breaks down it forms into soil which is very fertile soil. • Volcanic ash breaking down releases potassium, and phosphorus.

  15. Landforms From Magma • Magma forcing through cracks in the upper crust failing to reach the surface hardens into rock. • Water, ice, or wind may strip away the layers of rock above magma and expose it. • Volcanic necks look like giant teeth stuck in the ground.

  16. Landforms From Magma (continued) • A batholith is a mass of rock formed by a large body of magma cooling inside the crust. • Other bodies of magma create dome mountains. Dome mountains form when rising magma gets blocked by horizontal layers of rock.

  17. I Learned • We learned how calderas form and the damage it can leave behind like big giant holes. • We also learned the three different types of volcanoes. • Last we learned lava can form land.

  18. Presentation has title, mentions member’s names, and includes a complete date. Topic slides are well thought out, informative, full of details, and demonstrate a deep understanding of the subject. Presentation is very creative, animated, and uses many of the formatting techniques learned in class. Student helped gather the information, cooperated with the formatting, and helped the group stay focused by avoiding off-task behavior. TOTAL: 3 3 20 20 10 9 7 5 40 37 Grade Rubricfor Dolores Cerda Science

  19. Presentation has title, mentions member’s names, and includes a complete date. Topic slides are well thought out, informative, full of details, and demonstrate a deep understanding of the subject. Presentation is very creative, animated, and uses many of the formatting techniques learned in class. Student helped gather the information, cooperated with the formatting, and helped the group stay focused by avoiding off-task behavior. TOTAL: 3 3 20 20 10 9 7 7 40 39 Grade Rubricfor Daisy Gallardo Science

  20. Presentation has title, mentions member’s names, and includes a complete date. Topic slides are well thought out, informative, full of details, and demonstrate a deep understanding of the subject. Presentation is very creative, animated, and uses many of the formatting techniques learned in class. Student helped gather the information, cooperated with the formatting, and helped the group stay focused by avoiding off-task behavior. TOTAL: 3 3 20 20 10 9 7 4 40 36 Grade Rubricfor Judy Mendez Science

  21. Excellent beginning to your presentation, but it lacked a lot of formatting after Missing pictures for a lot of your vocabulary Few spelling and grammatical errors, good job! More organization of your time was needed to complete this assignment Teacher Notes Science

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