EARTH: AN INTRODUCTION TO PHYSICAL GEOLOGY

Chapter 2: Plate Tectonics: A Scientific Revolution Unfolds

Concept #5 Quiz

Choose the best possible answer to the following questions about Key Concept 5 "Components and processes of divergent plate margins."

19fig14.gif

1. Which of the following is NOT true about mid-ocean ridges? [Hint]

2.

Label the divergent plate boundary diagram below. [Hint]

For each item below, use the pull-down menu to select the letter that labels the correct part of the image.

The letters A through G appear on an image associated with this question.

3. The spreading rate for the Mid-Atlantic ridge is ____________ the rate for the East Pacific Rise. [Hint]

4. The largest earthquakes on Earth are recorded in association with divergent plate boundaries.  
 
5. Why is so much basaltic magma erupted along divergent plate boundary ridges?  

6. According to the plate tectonics theory, new crust is created at ocean ridges, and is destroyed at subduction zones. This indicates that the youngest ocean crust is associated with divergent plate boundaries. Where is the oldest ocean crust found today?  

7. Choose the appropriate letters and numbers on the diagram that are located at rift zones.
tectonic_features_diagram__.jpg [Hint]

Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
 




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