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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
Plate Tectonics
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Answers
1
________ is a line of volcanoes formed by a deep ocean trench.
Subduction Zone
Mid-Ocean Ridge
Island Arc
Convergent Plate Boundary
2
Transform plate boundaries create a rapid release of energy in the form of what?
Volcano
Tornado
Earthquake
Hurricane
3
If you used plate tectonics to predict where earthquakes would happen where would you pick?
where two plates slide past each other creating friction
where plates are dividing apart
in the middle of any continent
where one has not happened in at least a million years
4
The Earth's crust is NOT solid, it is broken into plates on top of the mantle.
False
True
5
Conduction currents cause plate movement
True
False
6
What do scientists use to measure the depth of an ocean to help create topographic maps?
Video Cameras
Radar
Echo sounder
Rulers
7
The outermost, rigid layer consisting of Earth's crust and part of the upper mantle is called
Biosphere
Atmosphere
Asthenosphere
Lithosphere
8
Which type of subduction would NOT result in a trench?
All of the Above
Continent-Continent
Ocean-Continent
Ocean-Ocean
9
If normal polarity is when compasses point north what direction will it be in reversed polarity
North
West
South
East
10
What evidence do scientists have that the Earth has plates?
Evidence from Pangea, the supercontinent
All of the above
Earthquakes and Volcanoes
Each year the plates move a few centimeters farther apart
11
If the sea floor is spreading, why is the Earth not getting larger?
Gravity prevents the Earth from growing
Erosion/weathering
It is getting larger
Old ocean crust is subducted and melted
12
Which of the following can be used as evidence for sea-floor spreading?
None of the above
Rocks with matching magnetic polarity exist on both sides
Both A and B
Rocks get older as they move away from mid-ocean ridges
13
Which part of Earth is most likely the cause of Earth's magnetic field?
Lithosphere
Asthenosphere
Core
Mantle
14
Why are the mountain ranges in North America and Europe evidence for continental drift?
The rocks are the same age and type
The coast lines do NOT match up
All of the above
They may have formed from a subduction zone
15
What is the name of the super-continent that Wegener proposed in the continental drift theory?
Pangea
Paleozonia
Padmalakshmi
Praehistoria
16
What best describes the motion of the tectonic plates?
Moves slowly 2-4 centimeters per year
Moves fast 5 kilometers per year
Moves fast 5-6 inches per year
Moves slowly 1-2 centimeters per year
17
___________ is where two plates collide.
Transform Plate Boundary
Mid-Ocean Ridge Plate Boundary
Divergent Plate Boundary
Convergent Plate Boundary
18
What is the picture?
Mid-Ocean Ridge
Transform Plate Boundary
Divergent Plate Boundary
Convergent Plate Boundary
19
A deep crack that runs through the center of the ocean is called
volcanic arc
mid-ocean ridge
rift valley
lithosphere
20
___________ is where two plates slide past each other .
Transform Plate Boundary
Divergent Plate Boundary
Mid-Ocean Ridge Plate Boundary
Convergent Plate Boundary
21
___________ is where a denser plate descends into the Earth along a convergent plate boundary.
Divergent Plate Boundary
Island arc
Subduction Zone
Mid-Ocean Ridge
22
What is the picture?
Divergent Plate Boundary
Convergent Plate Boundary
Mid-Ocean Ridge
Transform Plate Boundary
23
Wegener proposed that the continents were once part of one large landmass called Gondwanaland.
True
False
24
What can occur when plates separate on the seafloor?
Mid-ocean Ridges
Both A and B
Earthquakes
Tornadoes
25
_____________ is where two plates separate.
Transform Plate Boundary
Convergent Plate Boundary
Divergent Plate Boundary
Mid-Ocean Ridge Plate Boundary
26
What is the picture?
Divergent Plate Boundary
Transform Plate Boundary
Convergent Plate Boundary
Mid-Ocean Ridge
27
What even is most likely to occur when an ocean plate collides with a continental plate?
A rift valley will form in the continental plate
The plates will be subducted
A hot spot will form in the oceanic plate
There will be an earthquake
28
Who proposed that all continents were once part of a super continent called Pangaea?
Anthony Copernicus
Alfred Wegener
Alfred Pangea
Albert Einstein
29
When two continental plates collide, the edges are pushed upward to form a what?
Volcano
Trench
Continental Mountain Range
Rift valley
30
What is the picture?
Convergent Plate Boundary
Divergent Plate Boundary
Mid-Ocean Ridge
Transform Plate Boundary
31
What makes basalt rock on the ocean floor act like a small magnet?
They contain a lot of iron
The do not act like a small magnet
They contain a lot of sand
They contain a lot of water
32
Basal drag caused by convection currents in asthenosphere that circulate and drag lithosphere
True
False
33
Ridge push is where mantle material is falling which creates potential for the plates to move.
True
False
