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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
Plate Tectonics
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A review of plate tectonics
Flashcards
27 cards
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Practice quiz
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Questions
27
Answers
1
When two tectonic plates slide past each other, this produces what type of boundary?
Divergent boundary
Transform boundary
Convergent boundary
2
When 2 tectonic plates collide, what type of boundary is this?
A divergent boundary
A transform boundary
A convergent boundary
3
The magnetic field changes back and forth from north to south over long periods of time.
False
True
4
When two tectonic plates separate, this produces what type of boundary?
Convergent boundary
Divergent boundary
Transform boundary
5
Name 3 pieces of evidence for seafloor spreading.
Magnetism, trenches, mid-ocean ridges
Magnetism, earthquake patterns, age of the ocean floor
Volcanoes, mid-ocean ridges, mountains
6
What is another name for a continental-oceanic convergent boundary?
Subduction zone
Rift valley
Seafloor spreading
7
What 3 different pieces of evidence support the hypothesis of continental drift?
Fossils, mountain ranges/deserts, and glacial till
Fossils, deserts, and mountain ranges
Frogs, dinosaurs, and plants
8
What geologic feature is formed at a continental-continental convergent boundary?
Island arc
Volcano
Mountain
9
The lithosphere is made up of
The crust and upper mantle
The mantle and the core
The crust and the core
10
What happens at a rift valley or rift zone?
Earthquakes and volcanoes
Mountains and volcanoes
Volcanoes and island arcs
11
Which can occur at ALL tectonic plate boundaries?
Mountain
Earthquake
Volcano
Trench
12
What are the two types of crust?
Oceanic and atmospheric
Oceanic and continental
Continental and atmospheric
13
When did Pangaea occur?
250 million years ago
2.5 billion years ago
25 million years ago
14
What geologic feature is formed at an oceanic-oceanic divergent boundary?
Mid-ocean ridge
Trench
Island arcs
15
What geologic feature is common at subduction zones?
Volcano
Mountain
Mid-ocean ridge
16
At an oceanic-oceanic convergent boundary, which plate gets subducted (sinks)?
The younger, denser plate
Neither one sink
The older, denser plate
17
The inner core is a liquid mass in the center of the earth.
False
True
18
Plates move as a result of convection currents in the mantle.
True
False
19
Mid-ocean ridges are
underwater mountains
volcanoes
trenches
20
What event occurs at a transform boundary?
Earthquake
Mountain
Volcano
Trench
21
The outer core is composed mostly of
Iron
Nickel
Aluminum
22
What type of rock makes up the oceanic crust?
Igneous rock
All of the above
Sedimentary rock
Metamorphic rock
23
What happens when magma erupts along a mid-ocean ridge?
Creates new ocean crust
Creates new continental crust
Creates trenches
24
Earths interior chemical composition is made up of the
crust, mantle, and core
lithosphere, asthenosphere, and core
mantle, outer core, inner core
25
Continental drift is
An inference
A theory
A hypothesis
26
Who proposed the hypothesis of Continental Drift?
Alfred Wegener
Harry Hess
J. Tuzo Wilson
27
The oldest oceanic crust is found at mid-ocean ridges.
True
False
