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 (A)</p> Signup and view all the answers

Where are fault lines located?

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

What instrument is used to measure and record earthquakes?

<p>Seismograph (C)</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 (A)</p> Signup and view all the answers

What is the internal mechanism of a seismograph called?

<p>Seismometer (A)</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 (D)</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 (B)</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 (A)</p> Signup and view all the answers

What is the recording made by a seismograph called?

<p>Seismogram (C)</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 (B)</p> Signup and view all the answers

What is another term used to refer to a seismograph?

<p>Seismometer (B)</p> Signup and view all the answers

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