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  • 1. Volcanic Activity
  • 2. Igneous __________- classified by shape, size, and orientation Intrusions
  • 3. Major Volcanoes Around the World
  • 4. There are three types of volcanic cones:
    • ______ – explosive eruptions, small but steep slopes, pyroclastics
    • _______ – nonexplosive eruptions, fluid basaltic lava, gentle broad slopes
    • _________ – alternating between lava and pyroclastics, explosive and nonexplosive eruptions, steep and tall
    Cinder Shield Composite
  • 5. The _________ Islands are a volcanic group of islands 600 miles off the coast of Ecuador on the equator. Galapagos
  • 6. Lava flowing underground created this _____ _____, large enough to walk through. lava tube
  • 7. Kilauea on Hawaii is a good example of a _______ cone, with less explosive eruptions and less viscous lava . shield
  • 8. Mt Rainier and Mt St Helens are good examples of __________ cones, with explosive eruptions and erupted materials such as ash, bombs, and blocks. Mt St Helens Mt Rainier composite
  • 9. Crater Lake in Oregon is a __________formed from the collapse of the gigantic volcano Mount Mazama. ________________in the center of the lake is a small cinder cone. caldera Wizard Island
  • 10. Volcanoes Review:
    • Fast-moving clouds of gas, ash, and other tephra are called ____________ _
    • Large, rounded tephra are called __________ .
    • Iceland and Hawaii have ______ cones.
    • A mushroom-shaped igneous intrusion is a ______________.
    laccolith pyroclastic flows volcanic bombs shield