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The Theory of Plate Tectonics
Test Questions
1.
Label the major layers of the earth.
A. Outer core
B. Mantle
C. Inner core
D. Crust
2.
What is the …
…layer that is a liquid?
…layer that is the thinnest?
…layer with the greatest thickness?
…layer that is a solid metallic sphere?
A.
B.
C.
D.
Crust
Inner core
Outer core
Mantle
3.
Label this diagram:
A. Asthenosphere
B. Lithosphere
C. Continental crust
D. Oceanic crust
4.
What is the earth’s solid, rigid outer layer?
( ) Lithosphere
( ) Asthenosphere
( ) neither of the above.
5.
What is composed only of continental crust?
( ) Lithosphere
( ) Asthenosphere
( ) neither of the above.
6.
What is composed of mantle and crustal rocks?
( ) Lithosphere
( ) Asthenosphere
( ) neither of the above.
7.
What is the hot, weak zone found within the outer mantle?
( ) Lithosphere
( ) Asthenosphere
( ) neither of the above.
8.
What layer allows the earth’s rigid outer shell to move?
( ) Lithosphere
( ) Asthenosphere
( ) neither of the above.
9.
Which region is …
Composed primarily of basalt?
Composed of iron and magnesium rich silicate minerals?
Composed primarily of iron?
Composed of material similar to the rock granite?
A.
B.
C.
D.
Continental crust
Oceanic crust
Mantle
Core
10.
What was Pangaea?
( ) a fossil amphibian
( ) the name for the continental drift hypothesis
( ) the name of an ancient supercontinent
11.
When did Pangaea exist?
( ) about 200 million years ago
( ) about 600 million years ago
( ) about 2 billion years ago
12.
Who proposed the continental drift hypothesis?
( ) Harry Hess
( ) Alfred Wegener
( ) Fred Vine
13.
Which of the following are evidence that support Wegener’s continental drift hypothesis?
Check ALL that apply.
( ) Fit of the coastlines of South America and Africa
( ) Rocky Mountains are similar in age and structure to mountains in Australia
( ) Fossils of the same land animals are found on widely separated continents
( ) Ice sheets that covered portions of India and the southern continents 250 million years ago
( ) Fit of the coastlines of Japan and China
( ) Coal fields of United States, Europe, and Asia
14.
Label the plates.
African
Antarctic
Australian-Indian
Eurasian
North American
South American
Caribbean
Cocos
Juan de Fuca
Nazca
Pacific
Philippine
Scotia
B
A
A
F
C
E
H
G
K
I
D
J
L
M
16.
Which of these plates are composed mostly of oceanic crust?
Check ALL that apply.
( ) North American plate
( ) North Atlantic plate
( ) Pacific plate
( ) African plate
( ) Nazca plate
( ) Philippine plate
17.
Most of the largest plates contain:
( ) Mostly oceanic crust
( ) Mostly continental crust
( ) Large amounts of both oceanic and continental crust
18.
According to the plate model:
Check ALL that apply.
( ) Continental plates move in the opposite direction of oceanic plates
( ) Plates move as units
( ) Continental plates move faster than oceanic plates
( ) The distance between cities on different plates is always changing
19.
All major interactions between plates occur:
( ) Along plate margins
( ) Near the center of each plate where stress is greatest
( ) On the underside of each plate
D
20.
Plates are moving apart at:
( ) Divergent boundaries
( ) Convergent boundaries
( ) Transform faults
( ) None of the above
21.
Most divergent boundaries are located:
( ) In mountainous regions such as the Alps and Himalayas
( ) In the deep-ocean trenches
( ) At the oceanic ridges
22.
New oceanic crust is created at divergent boundaries at a rate of about:
( ) 5 centimeters per century
( ) 5 centimeters per year
( ) 5 meters per year
( ) 5 kilometers per year
23.
When two plates converge:
( ) Only the oceanic crust can slide into the mantle.
( ) Only the continental crust can slide into the mantle.
( ) Either the oceanic or continental crust may slide into the mantle.
24.
Match the following:
Oceanic-oceanic plate boundary
Oceanic-continental plate boundary
Continental-continental plate boundary
A. Volcanic arc
B. Island arc
C. Mountain range
Match the following:
Oceanic-oceanic plate boundary
Oceanic-continental plate boundary
Continental-continental plate boundary
A. Mount St. Helens
B. Himalayas
C. Mt. Pinatubo
25.
26.
Which of these are true about transform faults?
Check ALL that apply.
( ) New crust is formed at transform faults.
( ) Plates slide past each other at transform faults.
( ) Oceanic trenches are produced along transform faults.
( ) Most transform faults are found in the oceans.
( ) Transform faults sometimes connect convergent and divergent boundaries.
27.
Match the following:
Divergent boundary
Transform boundary
Ocean-ocean convergence
Ocean-continental convergence
Continental-continental convergence
A.
B.
C.
D.
E.
Andes
San Andreas
Volcanoes of Japan
Oceanic ridges
Alps
28.
New ocean floor is continually being produced along:
( ) divergent boundaries
( ) convergent boundaries
( ) transform boundaries
29.
Older ocean crust is being destroyed along:
( ) divergent boundaries
( ) convergent boundaries
( ) transform boundaries
30.
The location where new sea-floor is being formed is:
( ) ocean trenches
( ) ocean ridges
( ) fault zones
31.
Based on the plate tectonics theory, the age of the oceanic crust should:
( ) get older as we move away from the oceanic ridges
( ) get younger as we move away from the oceanic ridges
( ) show no particular pattern
32.
Using what you have learned about earthquakes and plates, which of the following statements is true?
( ) The floor of the Sea of Japan is being subducted eastward under Japan
( ) The floor of the Pacific basin is being subducted westward under Japan
33.
Which of the following is true?
( ) The Japan Trench lies east of Japan in the Pacific
( ) The Japan Trench lies between Japan and China
34.
The San Francisco earthquake of 1906 was the result of activity along which type of plate boundary?
( ) Divergent
( ) Transform
( ) Convergent
35.
Would you expect the focus depth of this earthquake to be:
( ) Shallow (0 to 70 km)
( ) Medium (70 to 300 km)
( ) Deep (more than 300 km)
36.
What was the general direction of plate motion during the formation of the Emperor seamounts?
( ) Northerly
( ) Southerly
( ) Southeasterly
( ) Northwesterly
37.
What was the general direction of plate motion during the formation of the Hawaiian Chain?
( ) Northerly
( ) Southerly
( ) Southeasterly
( ) Northwesterly