Earthquake Magnitude Scale Quiz
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Questions and Answers

What is the primary characteristic of a magnitude 3 earthquake on the scale?

  • Hanging objects swing violently
  • Felt by a few individuals at rest indoors (correct)
  • Liquids are slightly disturbed
  • Trees are noticeably shaken

    • Which of the following is a characteristic of a magnitude 6 earthquake?

  • Very old or poorly built houses are slightly damaged
  • Trees are noticeably shaken (correct)
  • Liquids are spilled
  • Hanging objects swing slightly

    • What is a potential effect of a magnitude 8 earthquake?

  • Boulders are thrown out from their positions near the epicenter (correct)
  • Wall plaster cracks
  • Furniture moves or may be shifted
  • Railway tracks are bent or broken

    • Which of the following is a characteristic of liquefaction during an earthquake?

    <p>Structures may sink, tilt or topple</p> Signup and view all the answers

    At what magnitude level on the scale do sleeping people typically awaken and some may run outdoors?

    <p>Magnitude 5</p> Signup and view all the answers

    Which of the following is a characteristic of a magnitude 7 earthquake?

    <p>Poorly built structures suffer considerable damage</p> Signup and view all the answers

    What is the primary cause of liquefaction during an earthquake?

    <p>Ground vibrations and shaking</p> Signup and view all the answers

    Which type of landslide movement is characterized by a downward and outward movement of soil or rock?

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

    Which of the following is NOT a direct volcanic hazard associated with eruptions?

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

    What is the primary trigger for deep-seated and catastrophic landslides, according to the Dynaslope Project?

    <p>Intense rainfall</p> Signup and view all the answers

    Which of the following is NOT a characteristic of a 'Completely Devastating' earthquake, according to the earthquake rating scale?

    <p>Utility posts and towers remain standing</p> Signup and view all the answers

    What is the term used to describe the horizontal displacement of gently sloping ground during an earthquake?

    <p>Lateral spreading</p> Signup and view all the answers

    What is the primary cause of coastal flooding?

    <p>Storm surges, high tide, and tsunamis</p> Signup and view all the answers

    Which region of the Philippines is most prone to liquefaction?

    <p>Central Luzon</p> Signup and view all the answers

    What is the PHILVOLCS Earthquake Rating Scale Intensity Scale for "Scarcely Perceptible" shaking?

    <p>1</p> Signup and view all the answers

    What is the typical range of earthquakes per day in earthquake-prone regions of the Philippines?

    <p>5 to 20</p> Signup and view all the answers

    What is the main cause of flash flooding?

    <p>Heavy rainfall in mountainous areas or steep places</p> Signup and view all the answers

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