Endogenic Processes and Magma Composition
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Questions and Answers

Where does magma originate?

  • In the lower portion of the mantle known as asthenosphere (correct)
  • At about 30 to 65 km below the Earth's surface
  • In the upper part of the Earth's crust
  • In the upper portion of the mantle known as asthenosphere

    • What is magma mainly composed of?

  • Molten rock and minerals
  • Molten rock, gas bubbles, and suspended crystals
  • Molten rock and gas bubbles
  • Molten rock, minerals, and gases (correct)

    • At what depth does the temperature rise high enough to melt rocks into magma?

  • At about 65 km below the Earth's surface
  • At about 65 degrees per kilometer
  • At about 30 km below the Earth's surface (correct)
  • At about 30 degrees per kilometer

    • What type of activity is typically associated with Mayon volcano eruptions?

    <p>Pyroclastic flows and mudflows</p> Signup and view all the answers

    What makes up the mixture of magma besides molten rock and minerals?

    <p>Suspended crystals and dissolved gas</p> Signup and view all the answers

    What is the primary component of magma?

    <p>Molten rock, minerals, and gases</p> Signup and view all the answers

    Where does magma originate?

    <p>Asthenosphere and lower part of the Earth's crust</p> Signup and view all the answers

    What is the temperature range at which rocks melt into magma?

    <p>30 to 65 degrees for every kilometer</p> Signup and view all the answers

    What does Mayon volcano eruptions typically include?

    <p>Powerful explosive activity, pyroclastic flows, mudflows, and lava flows</p> Signup and view all the answers

    Besides molten rock, what else may magma contain?

    <p>Suspended crystals and gas bubbles</p> Signup and view all the answers

    What is the primary composition of magma?

    <p>Molten rock, minerals, and gases</p> Signup and view all the answers

    Where does magma originate?

    <p>Lower part of the Earth's crust</p> Signup and view all the answers

    What typically accompanies powerful explosive activity in Mayon volcano eruptions?

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

    What is the temperature range at which rocks melt into magma?

    <p>About 30 degrees for every kilometer</p> Signup and view all the answers

    Besides molten rock and minerals, what else may magma contain?

    <p>Suspended crystals and dissolved gas</p> Signup and view all the answers

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