Volcanic Hazards and Mitigation
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Questions and Answers

What is a lahar?

  • A series of large ocean waves caused by volcanic activity
  • A barrier built to prevent landslides
  • An earthquake induced by volcanic activity
  • A flowing mass of volcanic debris and water (correct)

    • How fast can the wettest lahars travel?

  • Tens of meters per second (correct)
  • 50 miles per hour
  • 10 miles per hour
  • 30 miles per hour

    • What is the main focus regarding preventing loss of life in case of a tsunami triggered by a landslide?

  • Establishing evacuation routes for communities (correct)
  • Educating people living near volcanoes
  • Building barriers along coastlines
  • Preventing volcanic earthquakes

    • Why are lahars considered extremely dangerous?

    <p>They destroy anything in their path and are impossible to outrun</p> Signup and view all the answers

    What can technology detect to establish tsunami warning systems?

    <p>Unique wave frequency of a tsunami</p> Signup and view all the answers

    What are some consequences of volcanic eruptions?

    <p>Ejecting small particles into the stratosphere</p> Signup and view all the answers

    Which of the following is a common volcanic hazard?

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

    How do landslides relate to volcanic activity?

    <p>Volcanic mountains are weakened by magma and pressure, leading to landslides</p> Signup and view all the answers

    What is a significant feature of volcanic eruptions?

    <p>Mass movement of debris downslope</p> Signup and view all the answers

    How can volcanic hazards impact areas far from the eruption site?

    <p>By triggering ocean waves large enough to travel across oceans and destroy coastal areas</p> Signup and view all the answers

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