Download ES Ch 3 Quiz Review `13

Sea-Floor Spreading and Plate Tectonics Quiz Review Sheet
Quiz Friday May 10, 2013
The quiz will be open notes and labs. Make sure they are complete and correct.
You may not use the book or practice quizzes while taking the quiz.
You will turn in “Finding Ages of Rocks”, “Plate Boundary Pictures”, and the practice quizzes
on Friday, so be sure that you complete and bring them.
Quiz Format:
Fill in the blank, multiple choice, label the diagrams, explain the diagrams, short answer
Major topics are listed below along with the sections from the textbook, the related labs and
worksheets, important concepts. Sheets you can use on the quiz are in bold and underlined. Make
sure they are complete and correct and that you bring them.
A. Structure of Earth (“Structure of Earth” notes, “Thicknesses of Earth’s Crust” lab)
• Know the order, relationships, and characteristics of the layers of the Earth listed below.
crust
lithosphere
asthenosphere
• Know the two types of crust (continental, oceanic) and which is thicker.
• Know how thickness of crust controls how high the surface is and how deep the bottom of the crust is
comparing mountains of the continental crust, flat areas of continental crust, and oceanic crust.
Remember the lab “Thicknesses of Earth’s Crust”.
B. Continental Drift (Section 3-1 of Dynamic Earth text, “Evidence for Continental Drift” notes)
• Know the meaning and origin of the theory of continental drift and the evidence Wegener used to
support the idea. Be able to describe specific examples and how the evidence supports the idea of
continental drift and the separation of Pangaea.
C. Ocean-Floor Spreading (pages 60-63 of Section 3-2 of text, “Chapter 3 Notes continued…pp.
60-63”, “Earth’s Magnetism” Lab to be returned, “Finding Ages of Rocks” to be done)
• Know the meaning of the theory of sea floor spreading and how it relates to features of the oceans
and to continental drift.
• Understand how radioactive isotopes can be used to find ages of rocks. Refer to “Finding Ages of
Rocks” lab. Be able to do simple examples involving finding numbers of half-lives.
• Know how the age of the rocks right next to the each side of the rift valley compare to the ages of
rocks as you move farther out on either side of the rift valley.
• Know how magnetic “stripes” produced by reversals of Earth’s magnetic field that are recorded in the
rocks produced at the mid-ocean ridges supports the theory of ocean-floor spreading.
• Understand why the crust does not keep expanding even though crust is added at mid-ocean ridges.
• Know what subduction is, why it is important, and know examples of where it occurs.
• Know the important features of the ocean bottom related to sea-floor spreading (mid-ocean ridge with
rift valley) and subduction (trenches)
D. Plate Tectonics (Section 3-3 in textbook (pages 64-71), pictures on pages 67, 70, & 71, “Chapter
3 Notes continued…pp. 64-71”, “Plate Boundary Pictures”, “Summary of Plate Boundaries”)
• Know the meaning of plate tectonics and how it relates to the theories of continental drift and sea
floor spreading.
• Know the three major types of plate boundaries (divergent, convergent, strike slip (transform)) and
what happens at each. Understand the pictures on pages 67, 70 and 71.
• Understand the three types of convergent plate boundaries (ocean-ocean, ocean-continent, continentcontinent) and what happens at each. Understand the pictures on page 71.
• Know that ocean crust subducts beneath less dense continental crust and that older ocean crust
subducts beneath younger, less dense ocean crust.