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The study guide is due on Monday, Sept. 29th. 100% completion is
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Chapter 7 Study Guide
Plate Tectonics
Directions: Please answer the following questions on a separate sheet of paper.
1. What kind of crust makes up tectonic plates?
2. What did Wegener call the one large landmass when all the continents were together?
3. Where does new oceanic lithosphere form (hint: it happens in the ocean)?
4. What type of plate boundary does an earthquake happen at most often (pick only one boundary)?
5. What is the liquid layer of the Earth’s core called?
6. What layer of the Earth consists mainly of iron?
7. List some evidence that proved continental drift did occur?
8. Earthquakes mainly are associated with what one boundary?
9. Draw and label all the layers and sub layers of the Earth.
10. What do the tectonic plates “float” on?
11. What produces seismic waves?
12. What’s another name for continental-oceanic collisions when the denser plate goes down into the
mantle?
13. What type of boundary creates the Mid-Ocean ridge?
14. What type of fault is the San Andreas Fault in California?
15. How do convergent boundaries move?
16. How do divergent boundaries move?
17. How do transform boundaries move?
18. Where does sea-floor spreading take place?
19. How are volcanic mountains formed?
20. What is compression? At what plate boundary does compression occur?
21. What is tension? At what plate boundary does tension occur?
22. What is it called when Earth’s magnetic poles change places?
Essay Questions (exact test questions!)
1. What is the difference between a convergent and divergent plate boundary?
2. Please explain how magma moves in convection currents (be specific and detailed).
3. Why did Alfred Wegner believe that all of the continents once had been joined together to form
Pangaea (give at least three examples of evidence)?
4. How were the Himalayas and Appalachian Mountains similarly formed?
5. How does a mid-ocean ridge form, and where would you find the youngest and oldest rocks on the
seafloor (explain)?
6. What are subduction zones and at what type of boundary does it occur?
7. Draw and label an interior view of the Earth. Make sure to label the following layers: Crust, Inner
Core, Mantel, Lithosphere, Outer Core, Asthenosphere, Mesosphere, and Convection Currents.