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PLATE TECTONICS Test Review II Flashcards | StudBud
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PLATE TECTONICS Test Review II
PLATE TECTONICS Test Review II
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#platetectonics, #continentaldrift, #thetheoryofplatetectonics
Flashcards
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Questions
26
Answers
1
Ocean plates are __________ than continental plates.
thicker
lighter
more dense
less dense
2
The San Andreas Fault is a
divergent boundary
subduction zone
convergent boundary
transform fault boundary
3
Most of the planet's volcanism occurs
toward the interior of lithospheric plates.
within mountain ranges.
along mid-ocean ridges.
along continental margins.
4
What is the difference between lava and magma?
After magma reaches Earth’s surface it is called lava
They are made of different types of rock
They originate from different places
They are different colors
5
Continental drift was not widely accepted when it was first proposed because
continents were too big to move slowly over Earth’s surface.
mantle convection currents weren’t active until recently.
magnetic and sonar data suggested that it was incorrect.
why and how the continents moved could not be explained.
6
What evidence proved that S. America, Africa, India, and Australia were once glacial?
enormous valleys formed by glaciers
leftover portions of glaciers
their cold climates
glacial deposits and the scarring of rock surfaces
7
The existence of coal deposits in Antarctica indicates that the continent was once
swampy with dense vegetation
cold & dry
part of Africa
far from the equator
8
Which of the following forms when an oceanic plate collides with a continental plate?
subduction zone
a rift zone
magnetic reversal
an island
9
How do temperature and pressure change with depth in the Earth’s crust?
they remain the same
ask Einstein
they increase
they decrease
10
The Eurasian and North American Plates form what boundary?
transform fault
divergent
convergent
lithosphere
11
What do scientists believe is the force behind the plate tectonics theory?
the movement of the planets
convection currents
gravity slab pull
the Sun's gravity
12
Where are most divergent boundaries found?
mid-ocean ridges
within mountain ranges
continental margins
at subduction zones
13
What clue supported the continental drift theory?
Hydrothermal vents in the deep ocean
like fossils found on continents separated by oceans
different rock structures found on different continents
Navy sonar
14
Earth's crust is destroyed and recycled
within mountain ranges
at continental margins
at mid-ocean ridges
at subduction zones
15
Magma’s cycle of heating, rising, cooling, and sinking is called a _____________.
transform fault
convection current
subduction zone
convergent boundary
16
Which of the following is a plate boundary where two plates slide past each other?
divergent
convergent
volcanic
transform fault
17
What do we call boundaries along which plates are moving apart?
convergent
convection current
divergent
transform fault
18
Where is new oceanic crust formed?
transform fault boundary
subduction zone
the asthenosphere
mid - ocean ridge
19
Who began the theory of plate tectonics with his theory called continental drift?
Edwin Hubble
Isaac Newton
Copernicus
Alfred Wegener
20
When oceanic crust collides with continental, all of the following can happen -
except
?
There is a subduction zone
Crust is recycled
There is a transform boundary.
There are mountains formed
21
What are tectonic plates?
mantle material
slabs of oceanic crust
slabs of crust and upper mantle
slabs of continental crust
22
A mountain range, like the Himalayas, are forming as a result of
continental - oceanic convergence
oceanic - oceanic convergence
continental - continental convergence
none of the other choices is correct
23
Convection currents in the Mantle cause cooler, denser material to;
rise to the top of the asthenosphere
sink deeper into the mantle
form into solid rock
become lava
24
How does the flow of lava that has a low viscosity compare to lava with a high viscosity?
it's more explosive
it moves slower
it moves faster
it moves at the same speed
25
The layer of the Earth located just beneath the crust is called the
mantle
outer core
lithosphere
inner core
26
Where is the oldest oceanic crust found?
nearest the subduction zone
in the shallowest part of the ocean
nearest the mid-ocean ridge
in the middle of the plate
