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Plate Tectonics! Flashcards | StudBud
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Plate Tectonics!
Plate Tectonics!
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Basic PT
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
Oceanic-Oceanic converging plates create what features on the surface?
New oceanic crust
Mountain ranges
Volcanic mountain ranges and huge earthquakes
Volcanic island chains
2
Strips of rock on either side of ______ boundaries were polarized by Earth's magnetic field.
Divergent
Convergent
Transform
3
Seafloor spreading can occur at rates up to several meters per year.
False
True
4
Occasionally, Earth's polarization flips as the magnetic North becomes the magnetic South.
False
True
5
Transform boundaries cause what to happen when the plates slip and move?
The formation of oceanic crust
Volcanoes
Violent earthquakes
Oceanic trenches
6
The Atlantic Ocean is getting larger due to seafloor spreading at the Mid-Atlantic Ridge.
False
True
7
What layer of Earth moves by convection due to radioactive heat from the core?
The outer core
Continental crust
The asthenosphere
The lithosphere
8
Continental-Oceanic converging plates create what features on the surface?
Volcanic mountain ranges and huge earthquakes
New oceanic crust
Mountain ranges
Volcanic island chains
9
The continents South America and Africa were one connected during the Mesozoic Era.
False
True
10
What layer of Earth is the least dense?
The oceanic crust
The mantle
The continental crust
The asthenosphere
11
The most dense layer of Earth is known as the _____.
Mantle
Asthenosphere
Inner Core
Lithosphere
12
When two plates move apart from each other, a _____ boundary is created.
Divergent
Convergent
Transform
13
Where can the oldest oceanic crust be found?
In the rift where two plate are diverging?
None of these answers are correct.
Nearest the continental shelves.
In the middle of the oceanic plates.
14
Colliding plates are doing what?
diverging
converging
sliding past each other
15
Earth's core gives off heat by way of radioactive decay.
True
False
16
Our planet's _____ is made up of several moving and interacting _____.
lithosphere, plates
asthenosphere, volcanoes
asthenosphere, continents
lithosphere, continents
17
Earth must be growing larger because new crust is constantly being created.
False
True
18
Convection currents occur due to ______.
Density differences in the mantle.
Heat coming from Earth's radioactive core.
The flowing of solid rock slowly over millions of years.
All of these answers are true.
19
Diverging continental plates cause what feature to be formed at the surface?
New oceanic crust
Volcanic island chains
Mountain ranges
Only earthquakes
20
The last supercontinent, ______, was made up of two land masses named ______ and ______.
Rodinia, Pangaea, Gondwana
Pangaea, Rodinia, Eurasia
Pangaea, Laurasia, Gondwana
Rodinia, Laurasia, Gondwana
21
Continental-Continental convergent boundaries cause what features to form on the surface?
Volcanic island chains
Mountain ranges
New oceanic crust
Only earthquakes
22
How were the Hawaiian islands formed?
From a convergent plate boundary.
By a hot spot in the center of a plate.
From a transform plate boundary.
From a divergent plate boundary.
23
Mapping the locations of earthquakes and volcanoes would, over time, outline the Earth's plates
True
False
24
The asthenosphere is _____.
The outer core of Earth.
The Earth's crust, both continental and oceanic.
The solid, rocky part of Earth's mantle.
The flowing upper part of Earth's mantle.
25
The Pacific plate is sinking and subducting, being consumed as the ocean slowly closes up.
True
False
