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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
Plate Tectonics
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Plate Tectonics quiz
Flashcards
32 cards
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Practice quiz
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Questions
32
Answers
1
Compared to ocean crust near deep-sea trenches, crust near ocean ridges is _____.
magnetically reversed
the same age
younger
older
2
Which feature is associated with a continental-continental plate boundary?
a mountain range
a volcano
a deep-sea trenches
subduction zone
3
"Subduction zone" is represented by the letter _____.
C
A
B
D
4
Each cycle of spreading and intrusion of magma during seafloor spreading results in _____.
subduction
plates colliding
new ocean crust
magnetic reversals
5
"Highly-folded mountains" is represented by the letter _____.
D
A
B
C
6
At which tectonic plate boundary do plates slide horizontally past each other?
transform boundary
continental-continental boundary
oceanic-oceanic boundary
divergent boundary
7
The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is ______.
a mirror image of that of the other side.
much different from the magnetic pattern in rocks on land.
younger than on the other side.
at right angles to the ocean ridge.
8
An isochron is a change in Earth’s magnetic field.
True
False
9
Which best describes what happens when an oceanic plate converges with a continental plate?
A trench and a mountain range with many volcanoes form.
Both plates fracture, creating a series of long faults.
A deep-sea trench and an island arc form.
Both plates crumple and a folded mountain range forms.
10
The Mid-Atlantic Ridge is an example of a ______.
transform boundary
divergent boundary
subduction zone
convergent boundary
11
The youngest part of the ocean floor is found ____.
where Earth's magnetic field changes polarity
where ocean sediments are thickest
near ocean ridges
along deep-sea trenches
12
Continental drift was not widely accepted when it was first proposed because
Wegener couldn’t explain why or how the continents moved.
magnetic data proved that the hypothesis was incorrect.
continents were too big to move slowly over Earth’s surface.
mantle convection currents weren't in motion at that time.
13
"A" is depicting:
Hot magma is forced toward crust along an ocean ridge.
Hot magma fills the gap that forms at the ridge.
The magma hardens, to form a small amount of ocean floor.
14
"B" is depicting:
Hot magma fills the gap that forms at the ridge.
The magma hardens, to form a small amount of ocean floor.
Hot magma is forced toward crust along an ocean ridge.
15
To support his hypothesis of continental drift, Alfred Wegener did NOT use ______.
evidence from rock formations
magnetic field data
ancient climatic evidence
data on ancient reptiles and ferns
16
"C" is depicting:
Hot magma is forced toward crust along an ocean ridge.
Hot magma fills the gap that forms at the ridge.
The magma hardens, to form a small amount of ocean floor.
17
Compared to ocean crust near deep-sea trenches, crust near ocean ridges is ____.
older
younger
the same age
magnetically reversed
18
The thickness of ocean-floor sediments decreases with distance from an ocean ridge.
False
True
19
If two continental plates converge, a subduction zone forms.
False
True
20
"Volcanoes" is represented by the letter _____.
D
C
A
B
21
"Rift valley" is represented by the letter _____.
A
C
D
B
22
The driving forces of tectonic plates are related to convection currents in Earth’s ______.
outer core
crust
inner core
mantle
23
Crust is neither destroyed nor formed along which of the following boundaries?
divergent
transform
magnetic
convergent
24
At an oceanic-oceanic convergent boundary, ____.
old crust is deformed or fractured
plates slide past one another
old crust is recycled by subduction
new crust is created
25
The existence of coal beds in Antarctica indicates that the continent once was____.
closer to the equator
farther from the equator
cold and dry
part of Africa
26
Features found at divergent boundaries include _____.
crumpled mountains
ocean ridges
island arc volcanoes
deep-sea trenches
27
Many early mapmakers thought Earth’s continents had moved based on _____.
plate boundary locations
climatic data
matching coastlines
fossil evidence
28
Plates interact at boundaries by deflecting each other or moving horizontally past each other.
False
True
29
Earthquake activity and volcanism are common along ocean ridges.
True
False
30
Pangaea was an ancient supercontinent made up of ______.
the United States, Greenland, and Europe.
all of Earth’s continents.
Antarctica, India, and South America.
South Africa, India, Australia, and South America.
31
The magnetic patterns on either side of a deep-sea trench are mirror images of each other.
True
False
32
Continental-continental plate collisions produce ______.
rift valleys
island arcs
deep-sea trenches
very tall mountain ranges
