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LESSON 22-1 PRACTICE
compare!
the ground motion caused by earthquakes of these magnitudes
10. magnitude 5.0 compared to magnitude 2.0
11. magnitude 7.0 compared to magnitude 0
12. magnitude 6.0 compared to magnitude 5.0
13. A 1933 California earthquake had a Richter scale reading of 6.3. How
many times more powerful was the Alaska 1964 earthquake with a
reading of 8.3?
14. Critique the reasoning of others. Garrett said that the ground
motion of an earthquake of magnitude 6 is twice the ground motion of
an earthquake of magnitude 3. Is Garrett correct? Explain.



Answer :

GinnyAnswer

Final answer:

The magnitude scale in earthquakes is logarithmic, indicating significant increases in ground motion and energy released with each unit. Comparing earthquake magnitudes involves understanding the substantial energy differences between various magnitudes. Garrett's reasoning of a magnitude 6 earthquake being twice as powerful as a magnitude 3 is incorrect due to the nature of the logarithmic scale.


Explanation:

Magnitude scale in earthquakes is logarithmic, meaning each unit increase indicates a tenfold increase in ground motion and a thirtyfold increase in energy released. For example, a magnitude 3 earthquake releases 900 times more energy than a magnitude 1 quake.

To compare magnitudes like 6.0 and 5.0, note that a magnitude 6.0 earthquake is 32 times more powerful than a magnitude 5.0 quake in terms of energy released, not just double.

In the context of an earthquake of magnitude 6 being twice as powerful as magnitude 3, Garrett is incorrect. A magnitude difference of 1 unit on the Richter scale represents a 32-fold increase in energy, not a simple doubling.


Learn more about Earthquake Magnitude and Energy here:

https://brainly.com/question/34761358


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