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CHAPTER
PLATE TECTONICS
Key Concepts
Choose the letter of the best answer. (4 points each)
____ 1. Which of Earth’s layers makes up the center of Earth?
a. mantle
b. outer core
c. crust
d. inner core
Copyright © by McDougal Littell, a division of Houghton Mifflin Company
____ 2. Which of these would make the best model of Earth’s crust?
a. an egg’s shell
b. an egg yolk
c. a peach pit
d. an orange slice
____ 3. A tectonic plate is a slab of Earth’s
a. asthenosphere
b. lithosphere
c. outer core
d. inner core
____ 4. Which of these did Wegener use to support continental drift?
a. similar rocks on different continents
b. spreading on the ocean floor
c. convection currents in the lithosphere
d. magnetic reversal recorded on Pangaea
____ 5. Oceanic crust at a mid-ocean ridge is
a. younger than crust near a trench
b. older than crust near a trench
c. much older than continental crust
d. about the same age as continental crust
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CHAPTER 1
Plate Tectonics
1 Chapter Test A
CHAPTER 1
Plate Tectonics
____ 6. Movement of Earth’s plates is similar to
a. a cake rising in an oven
b. a blanket being folded
c. jump ropes being stretched
d. sponges on boiling water
____ 7. New crust forms along a(n)
a. convergent boundary
b. divergent boundary
c. ocean trench
d. subduction zone
____ 8. Earth’s magnetic reversals are recorded in
a. sea-floor rock
b. the mantle
c. deep-ocean trenches
d. the asthenosphere
____ 9. A continental-continental collision causes
a. oceanic-continental subduction to occur
b. oceanic-oceanic subduction to occur
c. hot spots to form
d. mountain ranges to form
Copyright © by McDougal Littell, a division of Houghton Mifflin Company
____ 10. Two plates scrape past each other at
a. convergent boundaries
b. divergent boundaries
c. transform boundaries
d. magnetic boundaries
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Interpreting Visuals
Copyright © by McDougal Littell, a division of Houghton Mifflin Company
CHAPTER 1
Plate Tectonics
Using the diagram, answer the following questions. (6 points each)
11.
Look at point B. How are the two plates moving?
12.
What kind of feature is forming at point A?
13.
What letter indicates a divergent boundary?
14.
Name the feature labeled E.
15.
Name the type(s) of plates involved in collision D.
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Constructed Response
16.
Identify plate boundary A. How do plates move along such boundaries?
17.
Identify plate boundary B. How do plates move along such boundaries?
18.
Identify plate boundary C. How do plates move along these boundaries?
Extended Response
Answer the following questions on the back of this paper or on a separate sheet
of paper. (6 points each)
Describe Earth’s crust and mantle. Be sure to discuss each layer’s thickness
and density. Use the following terms: continental crust, oceanic crust, lithosphere, and
asthenosphere.
19. Describing
State the theory of plate tectonics. Describe how the young age of the sea floor
helps support this theory. Use these terms: lithosphere, mid-ocean ridge, and spread.
20. Explaining
10 THE CHANGING EARTH, CHAPTER 1, CHAPTER TEST A
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Copyright © by McDougal Littell, a division of Houghton Mifflin Company
CHAPTER 1
Plate Tectonics
Using the diagram, answer the following questions. (6 points each)