Volcano science 6
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Volcano science 6

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Volcano science 6 Volcano science 6 Presentation Transcript

  • Lesson 4 volcanoes & different volcanic activities
  • Turn your book on page 335!!!!!!
  • Volcano • Is an opening in the earth’s crust where lava, pyroclasts, and gases are ejected onto the surface during eruptions.
  • • Calderas – that exceed about 1 km in diameter • formed when the summit of volcano collapses during eruptions.
  • Kinds of volcano •Shield volcano •Cinder cone volcano •Composite volcano or stratovolcano
  • Shield volcano
  • The largest shield volcano
  • Cinder cone volcano • Is built almost entirely of loose fragments called CINDERS
  • Composite volcano
  • According to activity • Active • Dormant • Extinct
  • Volcanic eruptions • Explosive or violent eruption • Quiet or non – explosive eruption
  • Thank you!!!