Understanding Seismic Activity
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Questions and Answers

Which type of seismic waves cause the most damage during an earthquake?

  • P-waves
  • S-waves
  • Body waves
  • Surface waves (correct)
  • What is the primary characteristic of P-waves?

  • Are the slowest of all seismic waves
  • Travel through the Earth's interior (correct)
  • Move in a snake-like motion
  • Move in an up-and-down motion
  • What is the primary cause of earthquakes?

  • Volcanic eruptions
  • Underground nuclear explosions
  • The collision or movement of tectonic plates (correct)
  • Meteorite impacts
  • How do S-waves primarily move?

    <p>In an up-and-down motion</p> Signup and view all the answers

    Where are fault lines located?

    <p>At the boundaries where tectonic plates meet</p> Signup and view all the answers

    What is the main difference between P-waves and S-waves?

    <p>Type of materials they travel through</p> Signup and view all the answers

    What instrument is used to measure and record earthquakes?

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

    Which type of seismic wave moves along the Earth's surface causing horizontal ground movement?

    <p>Love waves</p> Signup and view all the answers

    What is the internal mechanism of a seismograph called?

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

    Why is the Moment Magnitude Scale preferred over the Richter Scale for high-magnitude earthquakes?

    <p>It considers the earthquake's energy</p> Signup and view all the answers

    Which of the following best describes how tectonic plates can move relative to each other?

    <p>They can rub against each other, press against each other, or slide over or under each other</p> Signup and view all the answers

    What does each whole number change on the Richter Scale represent?

    <p>A ten-fold change in energy produced by the earthquake</p> Signup and view all the answers

    What is the recording made by a seismograph called?

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

    What is the main advantage of using seismograms to gather information about earthquakes?

    <p>They help determine location, size, and strength of earthquakes</p> Signup and view all the answers

    What is another term used to refer to a seismograph?

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

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