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Davis Chapter 17 - Plate Tectonics Flashcards | StudBud
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Davis Chapter 17 - Plate Tectonics
Davis Chapter 17 - Plate Tectonics
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Answers
1
The Himalayas in Asia are an example of what type of plate boundary?
divergent
continent-continent convergent
oceanic-continent convergent
transform
2
Which layer has convection currents?
Outer core
Crust
Mantle
Inner core
3
Transform boundaries are most likely to produce what phenomenon?
earthquakes
underwater mountain ranges
deep sea trenches
volcanoes
4
How fast do plates move relative to each other?
centimeters per day
millimeters per day
meters per year
centimeters per year
5
Subduction Zone
B
C
D
A
6
Why do oceanic plates always subduct under continental plates?
This is an incomplete question
Continental plates are more dense
Oceanic plates are more dense
Oceanic plates are older
7
Subduction zones in the ocean can create which features?
islands
earthquakes
all of these
volcanoes
8
The theory of seafloor spreading was introduced in the 1960s by who?
Alfred Wagener
Harry Harrison
Harry Hess
Elmo
9
One of Alfred Wegner's pieces of evidence to support continental drift was...
All answers are pieces of evidence
The same rock and mountain formations
Apparent fit of the continents
The same fossil types on different continents
10
The lithosphere moves like liquid
False
True
11
In 1912, who proposed the hypothesis about continental movement to the scientific community?
Alfred Wolffe
Harold Wegner
Harvey Jackson
Alfred Wegner
12
What is the name of the plate boundary that slides past each other?
Mr. C and the Slide Man
transform
divergent
convergent
13
Oceanic plates are mostly made of
granite
basalt
14
Which is a convergent boundary that does not have a subduction zone?
oceanic-oceanic
transform
oceanic-continental
continental-continental
15
The asthenosphere is above the lithosphere...
False
True
16
What type of boundary is shown?
a transform boundary
a continental-continental boundary
an oceanic-continental boundary
an ocean ridge
17
What type of boundary is shown?
an ocean ridge
a continental-continental boundary
an oceanic-continental boundary
a transform boundary
18
Granite is less dense than basalt
true
false
19
When two oceanic plates are spreading apart at a divergent boundary it creates a what?
oceanic ridge
South American Plate
Himalayan Mountains
rift valley
20
Continental plates are mostly made of
basalt
granite
21
Generally, what is the age of oceanic crust?
younger than the continental crust
older than the continental crust
the same age as continental crust
science has never determined its age
22
When one plate slides underneath another, it _________ and the plate _________.
hardens, rises
hardens and sinks
melts, sinks
melts, rises
23
What kind of currents develop in the mantle transferring thermal energy from the Earth's interior to its exterior?
Radiation
Inversion
Conduction
Convection
24
What are two types of crust?
Pizza and subway
Ocean and continental
Upper and lower
Ocean and upper
25
Where does seafloor spreading occur
Rift Ridges
Mountain Ridges
Mid-Ocean Ridges
None of the above
26
The process that HELPS to move an oceanic plate toward a subduction zone.
Ridge Push
Convection Currents
Plate Tectonics
Transform
27
The Great Rift Valley in Africa and the Mid-Ocean Ridge were all created by this boundary:
Transform
Reform
Convergent
Divergent
28
Which suggested to early cartographers that the continents were once joined?
shape of continents
ocean depth
size of Atlantic Ocean
position of south pole
29
Who discovered seafloor spreading?
Harry Hess
Albert Einstien
The Ghostbusters
Harry Wells
30
What is a slab pull?
The plate is being pulled into the crust.
The pulling force by a cold, dense oceanic plate plunging into the mantle.
It is a mysterious force that just pulls the plate into the mantle
The mantle goes on top of the plate instead.
31
A magnetic reversal happens when
when Earth flips upside down
the flow in the inner core changes
the flow in the outer core changes
the flow in the crust changes
32
A subduction zone is formed...
At every type of divergent plate
When one tectonic plate sinks below another.
At every type of convergent boundaries.
At other transform boundries
33
What was Wegner's hypothesis called?
Seafloor Spreading
Slab Pull
Continental Drift
Plate Techtonics
34
As you move away from a oceanic ridge, the rock gets
older
younger
35
A mid-ocean ridge occurs at a ________ plate boundary.
transform
convergent
divergent
36
The Glossopteris plant provided evidence for which theory?
Seafloor Spreading
Continental Drift
Plate Tectonics
Existence of alien life forms
37
What type of plate boundary would cause mountains to form?
Reform
Divergent
Convergent
Transform
38
Earthquakes and volcanoes are most likely found in which locations?
In the middle of continents
In the middle of plates
At plate boundaries
Oceans
39
Ridge push and slab pull are two of the processes that move tectonic plates over the surface of the earth.
False
True
40
What kind of feature forms along a continental-continental boundary?
subduction zone
island arcs
oceanic trenches
folded mountains
