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Pangea & Plate Tectonics Review Flashcards | StudBud
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Pangea & Plate Tectonics Review
Pangea & Plate Tectonics Review
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Theory of Continental Drift Seafloor Spreading Theory of Plate Tectonics
Flashcards
18 cards
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Questions
18
Answers
1
Seafloor spreading is a process that...
causes continents to plow through the seafloor
destroys oceanic crust
occurs at the mid-ocean ridges
2
Mountains like the Himalayas in southern Asia form because these plate boundaries collide...
Divergent Plate Boundary
Transform Plate Boundary
Convergent Plate Boundary
3
Magnetic stripes on the seafloor show that...
earthquakes are common in the ocean
Earth's magnetic field has changed
crust is destroyed at ridges
4
What evidence suggests that continents were once joined?
convergent plate boundaries
the puzzle-like fit of coastlines
topography of the seafloor
5
The theory of plate tectonics provides an explanation for why ___________ and ________ occur.
earthquakes and milkshakes
earthquakes and volcanoes
earthquakes and mountains
6
A landform that is created at a convergent plate boundary (when the densities of both plates is equal) is called a(n)
rift valley
mountain
deep-ocean trench
7
What is Pangaea?
a large ice sheet
a fern that lives close to the equator
a supercontinent made of the present-day continents
8
How does seafloor spreading support continental drift theory?
It suggests continents move with the ocean floor
It suggests that continents plow through the ocean floor
It suggests that continents are static parts of Earths crust
9
The three main layers of Earth are the crust, the mantle, and the core.
FALSE
TRUE
10
In divergent plate boundary,
two continental plates collide.
two plates separate.
two plates slide past one another.
11
What causes tectonic plates to move?
convection in the mantle
earthquakes in the crust
magnetism on the seafloor
12
What happens at a transform plate boundary?
Plates slide past each other
Plates move toward each other
Plates move away from each other
13
The San Andreas Fault in California is an example of this type of plate boundary...
Transform Plate Boundary
Convergent Plate Boundary
Divergent Plate Boundary
14
The mountain ranges in the middle of the oceans are called...
Mid-ocean ridges
Plains
Ridge Push
15
What are tectonic plates?
slabs of crust and upper mantle
slabs of continental crust
slabs of oceanic crust
16
What plate boundaries cause continents to pull apart and form rift valleys?
Convergent Plate Boundary
Transform Plate Boundary
Divergent Plate Boundary
17
A subduction zone is located at a(n) ___________________ plate boundary.
convergent
transform
divergent
18
Wegener's hypothesis of a supercontinent was supported by...
convection currents in the mantle
earthquake date
seafloor magnetism
rock, fossils, and climate data
