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REVISED Earth's Layers and Plate Tectonics Flashcards | StudBud
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REVISED Earth's Layers and Plate Tectonics
REVISED Earth's Layers and Plate Tectonics
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Review of Earth's layers, continental drift, plate tectonics and seafloor spreading
Flashcards
35 cards
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Practice quiz
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Questions
35
Answers
1
Name all of the types of plate boundaries.
Divergent, Transform, Convergent
Grass, worm, lizard, NY
Oceanic and Continental
Ocean, Air, Land, Fire
2
Most tectonic plates have two kinds of crust, what are they?
oceanic crust & continental crust
soft crust & hard crust
inner crust & outer crust
crust & mantle
3
What does a transform boundary create?
Valleys
Mountains
Earthquakes
Nothing
4
The Theory of Plate Tectonics combined information from
Seafloor Spreading
The Theory of Relativity
The Theory of Continental Drift
The Pythagorean Theorem
5
Earthquakes, mountain ranges, volcanoes, trenches and mid-ocean ridges occur at . . .
only on the ocean floor.
the center of tectonic plates.
only on continents.
tectonic plate boundaries.
6
Most earthquakes and volcanoes occur where?
At the edges of tectonic plates
In Oceanic crust
In the middle of tectonic plates
In random spots across the continents
7
Convection currents are caused by heat from the core.
True
False
8
When a continental and an oceanic plate collide, the oceanic plate sinks because...
of the convection currents
it is denser than continental crust
it is less dense
it is softer than continental crust
9
Convection currents influence tectonic plate movement
False
True
10
Oceanic crust is________ than continental crust.
colder
more dense
colder
hotter
11
Where do ocean trenches occur?
Anticlines
Fold mountains
Subduction zones at a plate boundary
Volcanoes
12
What was the name of the supercontinent proposed by Wegener?
Pyreneese
Pangaea
Anarees
Utopia
13
The Asthenosphere is located in the
Outer core
Mantle
Crust
Core
14
The mid ocean ridges are
subduction zones
where the Earth's crust is being destroyed
where the Earth's crust is being made
contains the oldest rock
15
A _____ is formed at a divergent plate boundary in the ocean
Trench
Rift Valley
Mid-Ocean Ridge
Mountain
16
When an oceanic plate and a continental plate converge, ____ are formed.
trenches and volcanoes
rift valleys
asthenosphere
mid-ocean ridges
17
Convergent plate boundaries...
don't move at all.
slide past each other.
move away from each other.
move toward each other.
18
Who proposed the Continental Drift Theory?
Alfred Wegener
Albert Einstein
Dwayne "The Rock" Johnson
Steven Hawking
19
How Do Convection Currents Work?
Magma is heated and rises then cools and sinks back down
Magma cools and rises then heats back down
20
What is the outermost layer of Earth?
mantle
lithosphere
asthenosphere
crust
21
What is seafloor spreading?
a mountain or hill, typically conical
an area of the Earth's mantle from which hot plumes rise
the formation of new areas of oceanic crust
Where the most active volcanoes lie
22
What type of boundary is responsible for seafloor spreading?
Divergent
Transform
Convergent
23
What was missing from Alfred Wegener's continental drift proposal?
A map of Pangaea
Explanation/mechanism for HOW it occurred
Fossil evidence of continental drift
Evidence to support his proposal
24
Which of Earth's layers is shown by the number 4 in the diagram below?
crust
mantle
inner core
outer core
25
This image shows ______________ evidence of continental drift.
fossil
glacier
rock
26
Which type of boundary causes a continental rift valley?
Divergent
Convergent
Transform
27
The idea that new crust forms at a mid-ocean ridge & old crust is destroyed at a subduction zone
Weathering
Erosion
Seafloor Spreading
Continental Drift
28
The Himalayas were built by two _____________ convergent plates colliding.
Continental
Oceanic
29
What happens at a subduction zone?
Magma is collected
The denser plate is forced underneath the less dense plate
Magma rises through cracks in the Earth's surface
Both plates are forced upwards (folding)
30
Tectonic plates are made of broken pieces of lithosphere
False
True
31
What is the theory of Continental Drift?
i have no idea
Theory that earth's lithosphere is in constant motion
its a thing when the earth moves
the theory that the continents slowly move across earth's surface.
32
The ring of fire is a ring of volcanoes and earthquakes that occur
at transform plate boundaries
at plate boundaries
at hotspots
at mid-ocean ridges
33
What causes tectonic plates to move?
force
sea-floor spreading and subduction
volcanoes and earthquakes
convection currents in the mantle
34
The lithosphere includes
Core
Crust
Mantle
Crust and upper mantle
35
What
layer
of the earth moves the tectonic plates?
Lithosphere
Asthenosphere
Crust
Inner Core
