Download Study Guide – Plate Tectonics (Chapter 21) Name _____ Question

Study Guide – Plate Tectonics
Question
21.1 The Earth’s Interior Structure
1. What is the radius of the Earth,
in kilometers and in miles?
2.
Name the four major regions of
the Earth, from “outermost” to
“innermost”.
3.
About how thick, in kilometers,
is the Earth’s crust under the
continents? Under the ocean
basins?
4.
(Chapter 21)
Name ______________________Period _____
Answer
What is Moho?
21.2 Continental Drift and Seafloor
Spreading
5. What is meant by the term
Pangaea?
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6.
7.
8.
What is remanent magnetism?
Briefly state three types of
evidence that support the
concept of continental drift.
What was missing from this
concept?
What is the Mid-Atlantic Ridge?
21.3 Plate Tectonics
9. What, in the context of plate
tectonics, is a plate?
10. What and where are the
lithosphere and the
asthenosphere?
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11. Give a brief explanation of the
concept of isostasy.
12. Describe the three general types
of plate boundaries.
13. What is a subduction zone?
14. At what type of plate boundary
is rock consumed? Produced?
Neither consumed nor produced?
15. When an oceanic plate collides
with a continental plate at a
convergent boundary, which one
is subducted? Why?
21.4 Plate Motion and Volcanoes
16. Briefly, how are volcanoes
explained in the theory of plate
tectonics?
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17. In what general regions on
Earth are volcanoes found?
18. Give three examples of
mountains formed by volcanic
activity.
21.5 Earthquakes
19. Briefly, how are earthquakes
explained in the theory of plate
tectonics?
20. Name the two plates that border
the San Andreas Fault. How are
the plates moving relative to one
another?
21. Distinguish between the focus
and the epicenter of an
earthquake.
22. Which type of seismic body wave
cannot travel through a liquid
medium?
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23. What is measured by the Richter
scale? What is measured by the
Mercalli scale?
24. On what three factors does the
damage caused by an
earthquake depend?
21.6 Crustal Deformation &
Mountain Building
25. Make a simple sketch of a fold,
and show the difference between
a syncline and an anticline.
26. Distinguish among a normal
fault, a reverse fault, and a
transform fault.
27. Name the type of plate boundary
that is most likely to cause
mountain building.
28. To which of the three principal
types of mountains does each of
the following belong: (a) Grand
Tetons, (b) Appalachians,
(c) Cascades, (d) Himalayas
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