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Volcanic Activity

Volcanic Activity. Chapter 18. Igneous __________- classified by shape, size, and orientation. Intrusions. Major Volcanoes Around the World. There are three types of volcanic cones:. Cinder. ______ – explosive eruptions, small but steep slopes, pyroclastics

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Volcanic Activity

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  1. Volcanic Activity Chapter 18

  2. Igneous __________- classified by shape, size, and orientation Intrusions

  3. Major Volcanoes Around the World

  4. There are three types of volcanic cones: Cinder • ______ – 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 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. composite Mt St Helens Mt Rainier

  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 ______________. pyroclastic flows volcanic bombs shield laccolith

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