Volcano

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Volcano

  1. 1. Volcanic Activity
  2. 2. Igneous __________- classified by shape, size, and orientation Intrusions
  3. 3. Major Volcanoes Around the World
  4. 4. There are three types of volcanic cones: <ul><li>______ – explosive eruptions, small but steep slopes, pyroclastics </li></ul><ul><li>_______ – nonexplosive eruptions, fluid basaltic lava, gentle broad slopes </li></ul><ul><li>_________ – alternating between lava and pyroclastics, explosive and nonexplosive eruptions, steep and tall </li></ul>Cinder Shield Composite
  5. 5. The _________ Islands are a volcanic group of islands 600 miles off the coast of Ecuador on the equator. Galapagos
  6. 6. Lava flowing underground created this _____ _____, large enough to walk through. lava tube
  7. 7. Kilauea on Hawaii is a good example of a _______ cone, with less explosive eruptions and less viscous lava . shield
  8. 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. 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. 10. Volcanoes Review: <ul><li>Fast-moving clouds of gas, ash, and other tephra are called ____________ _ </li></ul><ul><li>Large, rounded tephra are called __________ . </li></ul><ul><li>Iceland and Hawaii have ______ cones. </li></ul><ul><li>A mushroom-shaped igneous intrusion is a ______________. </li></ul>laccolith pyroclastic flows volcanic bombs shield

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