MODULE 8 STUDY GUIDE

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S2021_8InternalProcesses.pdf

8. INTERNAL PROCESSES - PLATE TECTONICS, VOLCANISM, FAULTING

1. What is the theory of plate tectonics?

2. What evidence confirms that seafloor spreading has been taking place? Explain the evidence from both paleomagnetism and ocean floor cores.

3. Describe the fundamental differences among diver- gent, convergent, and trans- form plate boundaries.

4. What is subduction? At what plate boundaries does subduction occur? What landforms are associated with it?

5. What is a transform plate boundary?

6. What is a hot spot? How is this different from sub- duction?

7. Define and contrast the following:

magma

lava

8. D raw

th e 5 m

ain p

late b o

u n

d aries. B

e su re to

d raw

in th

e lan d

fo rm

s th ey create alo

n g

w

ith arro

w s in

d icatin

g th

e d irectio

n o

f p late m

o vem

en t.

o cean

ic-o cean

ic co

n verg

en t

o cean

ic-o cean

ic d

iverg en

t o

cean ic-o

n tin

en tal

co n

verg en

t co

n tin

en tal-co

n tin

en tal

d iverg

en t

co n

tin en

tal-co n

tin en

tal co

n verg

en t

9. Explain the general differences in silica content and style of volcanic erup- tion associated with low silica magma and high silica magma.

10. Describe and explain the general formation, shape, and structure of the folloing kinds of volcanoes:

shield volcanoes

composite volcanoes

lava domes (plug domes)

cinder cones

11. How is folding different from faulting? What are synclines and anticlines?

12. Explain the differences in stress direction and dis- placement among the four basic kinds of faults:

normal faults

reverse faults

thrust faults

strike-slip faults

  1. Question 8:
  2. Question 11:
  3. Question 12:
  4. Question 13:
  5. Question 19:
  6. Question 17:
  7. Question 18:
  8. Question 14:
  9. Question 16:
  10. Question 25:
  11. Question 26: