Understanding the Richter Scale for Earthquakes

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Questions and Answers

Who invented the Richter Scale?

  • Isaac Newton
  • Beno Gutenburg
  • Charles Richter (correct)
  • Albert Einstein

What does the Richter Scale measure?

  • The earthquake's duration
  • The earthquake's intensity (correct)
  • Amount of destruction caused by an earthquake
  • Distance the earthquake travels

Where did Charles Richter study before inventing the Richter Scale?

  • Stanford University
  • California Institute of Technology (correct)
  • Harvard University
  • Oxford University

What area were earthquakes in originally focused on when developing the Richter Scale?

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

What is the main limitation of the Richter Scale according to the text?

<p>It cannot measure seismic activity accurately in all regions. (A)</p> Signup and view all the answers

What is Charles Richter's background before becoming involved in seismology?

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

How does the Richter Scale differ from measuring the amount of destruction caused by an earthquake?

<p>It assesses the intensity of ground shaking and energy released. (B)</p> Signup and view all the answers

What is the primary purpose of the Richter scale?

<p>To measure the magnitude of small to moderate earthquakes (A)</p> Signup and view all the answers

How does the Richter scale measure the magnitude of an earthquake?

<p>By measuring the amplitude of the largest seismic wave (B)</p> Signup and view all the answers

What is the relationship between the magnitude increase on the Richter scale and the intensity of ground shaking?

<p>The ground shaking intensity increases by 10 times with each unit increase in magnitude (C)</p> Signup and view all the answers

What is the primary limitation of the Richter scale?

<p>It cannot accurately measure earthquakes with magnitudes above 6.5 (D)</p> Signup and view all the answers

What is the seismic moment used in the moment magnitude scale?

<p>The force multiplied by the displacement of the fault across the entire area (A)</p> Signup and view all the answers

Why was the moment magnitude scale developed?

<p>To accurately measure large, destructive earthquakes with magnitudes above 8 (C)</p> Signup and view all the answers

What is the primary factor that affects the accuracy of the Richter scale measurement?

<p>The proximity of the seismograph to the earthquake (D)</p> Signup and view all the answers

What is the difference in energy release between an earthquake with a magnitude of 4 and an earthquake with a magnitude of 8 on the Richter scale?

<p>The magnitude 8 earthquake releases 1,048,576 times more energy (B)</p> Signup and view all the answers

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