Volcanoes: Types and Features
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Questions and Answers

What feature distinguishes a CRATER from a CALDERA at the summit of a volcano?

  • Rock formation
  • Explosive eruption
  • Funnel-shaped opening (correct)
  • Lava accumulation
  • How are SHIELD VOLCANOES mainly formed?

  • By accumulation of lava (correct)
  • By ejected lava fragments
  • By explosive eruptions
  • By weathering and erosion
  • Which type of volcano is characterized by a steep slope, wide crater, and abundant cinders?

  • Inactive Volcano
  • Caldera
  • Cinder Cone Volcano (correct)
  • Shield Volcano
  • What defines an ACTIVE VOLCANO based on its record of eruption?

    <p>Eruption over the last 600 years</p> Signup and view all the answers

    How do CINDER CONE VOLCANOES differ from SHIELD VOLCANOES?

    <p>Steep slope vs. domed structure</p> Signup and view all the answers

    What leads to the formation of a CALDERA at the summit of a volcano?

    <p>Wall collapse post-explosive eruption</p> Signup and view all the answers

    What type of volcano is formed from the alternating solidification of lava and pyroclastic deposits?

    <p>Composite cone or stratovolcano</p> Signup and view all the answers

    What is the key characteristic of a fissure volcano?

    <p>It has giant cracks that open in the ground to expel lava</p> Signup and view all the answers

    What is the term used to describe the mixture of rock, mineral, and glass particles expelled from a volcano during an eruption?

    <p>Pyroclastic materials</p> Signup and view all the answers

    Which type of pyroclastic material refers to igneous rocks that formed during a volcanic eruption and were blown into the air?

    <p>Tephra</p> Signup and view all the answers

    What is the term used to describe the fine particles of rock powder that are blown out from a volcano and can remain suspended in the atmosphere for long periods?

    <p>Volcanic dust</p> Signup and view all the answers

    What type of volcanic eruption is dominated by the outpouring of lava onto the ground?

    <p>Effusive type of eruption</p> Signup and view all the answers

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