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Plate Tectonics
Plate Tectonics
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An #earth science quiz on #plate tectonics by #Motze and #Driesbach
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
During periods of normal polarity, south is the positive magnetic pole.
True
False
2
What type of boundary is creating the Himalayan mountains?
divergent
collision
subduction
transform
3
Oceanic rock is made of granite, an igneous rock.
True
False
4
What was the weakness in Alfred Wegener's theory?
He couldn't explain magnetic striping.
He didn't have evidence of lithospheric plates.
He didn't know what forces could move the plates.
He could not explain the presence of mid-ocean ridges.
5
Which statement about the mid-Atlantic ridge is false?
The rocks are young.
Earthquakes occur there.
The plates are separating
Volcanic island arcs, like Hawaii, form there.
6
The only continent with a craton is North America.
Yes
No
7
What event or formation occurs at every type of plate boundary?
Mountain range
Volcanic activity
Earthquake
Trench
8
How deep is the ocean if sonar waves travel at 1500 m/s and 10 seconds of time elapse?
15,000 m
5000 m
7500 m
150 m
9
Hydrothermal vents occur at this type of boundary.
subduction
divergent
Collision
transform
10
What is the main cause of continental growth at a subduction boundary?
river sediments
plutons
deep sea sediments
terranes
11
Which type of convection currents will pull plates together (converge)?
Cool & Sinking
Cool & Rising
Hot & Rising
Hot & Sinking
12
All continents were united in this single landmass.
Patagonia
Gondwana
Laurasia
Pangea
13
Why is only a portion of the North American craton visible?
The rest was ejected from the volcano.
The rest has melted into magma.
It has undergone metamorphism.
Surrounding rock weathered and eroded.
14
Rock removed from the ocean at subduction boundaries is returned here.
rift valley
collision boundary
fracture zone
deep sea trench
15
The slope at a spreading center causes this type of plate movement.
Magnetic flux
Slab pull
Ridge push
Mantle convection
16
The highest places on the ocean floor occur where lithospheric plates are
moving away from one another
colliding with one another
unmoving
sliding past one another
17
What type of boundary will produce a volcanic island arc?
Ocean/Continent subduction
Ocean/Ocean subduction
Ocean/Ocean transform
Ocean/Ocean divergence
18
Which area will contain the youngest rock?
Craton
Mid-ocean ridge
Ocean basin
Deep sea trench
19
What is the main rock of oceanic crust?
Basalt
Andesite
Diorite
Granite
20
What forms when two continental plates converge?
volcanoes
abyssal plains
rift valleys
mountains
21
What type of boundary is the San Andreas fault line?
Subduction
Divergent
Collision
Transform
22
What explains the presence of tropical plant fossils in Antarctica?
Global warming
It was once in the tropics
Remains from Eskimo greenhouses
Change in ocean currents
23
Which method of plate movement is primary at a subduction boundary?
Ridge push
Slab pull
Convection
Advection
24
Where is the lithosphere located?
crust
crust & entire mantle
crust & upper mantle
crust, mantle, & upper outer core
25
What is an area bounded on all sides by major faults?
craton
fracture zone
rift valley
terrane
26
Which is an exposed part of the North American craton?
Mount St. Helens
Canadian shield
Rocky Mountains
Yellowstone
27
Oceanic rocks are more dense than continental rocks.
True
False
28
What feature runs through the center of a divergent boundary?
fracture zone
abyssal plain
rift valley
terrane
29
Which of the following is NOT evidence of a terrane?
Similar fossils along coastline
Magnetic record is not consistent
Ages of the rocks do not agree
Different rock formations
30
Antarctica does not have a craton.
True
False
