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Earth's Interior and Plate Tectonics Flashcards | StudBud
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Earth's Interior and Plate Tectonics
Earth's Interior and Plate Tectonics
20 terms
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Review for quiz on Earth's four layers and plate tectonics.
Flashcards
20 cards
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Questions
20
Answers
1
Which statement below is NOT supported by studying oceanic crust on either side of a mid-ocean ridge?
magnetic polarity is a mirror image on either side of a mid-ocean ridge
oceanic crust is oldest at mid-ocean ridges
seafloor age is a mirror image on either side of a mid-ocean ridge
magnetic polarity reverses over time
2
Which feature correctly describes continental crust?
thinner than oceanic
younger than oceanic
denser than oceanic
thicker than oceanic
3
Hot spot volcanism occurs --
at transform boundaries.
at diverging plate boundaries.
at converging plate boundaries.
within plate boundaries.
4
What is a common feature found at divergent plate boundaries throughout the world's oceans?
Fold Mountains
Oceanic Trench
Volcanic Island Arc
Mid-Ocean Ridge
5
Most major geologic events, like earthquakes, volcanoes, and mountain building, occur at plate boundaries?
False
True
6
At a strike-slip fault, crust blocks slide past one another. At which type of plate boundary does this motion occur?
Reverse Boundary
Convergent Boundary
Divergent Boundary
Transform Boundary
7
Which statement below is NOT a current theory to explain why tectonic plates move?
sinking plates at subduction zones pull the rest of the slab downward
convection currents cause the mantle to rise
mid-ocean ridges push plates apart with the help of gravity
the magnetic core attracts sinking plates
8
Which statement below is NOT correct about P and S waves.
They are the first two waves to reach an earthquake recording station.
They are surface waves.
They are seismic waves.
They are body waves.
9
This rift valley begins on continental crust at which type of plate boundary?
strike-slip
convergent
transform
divergent
10
Fold mountains occur where --
divergent plates create tension and a block of crust drops.
plates slide past one another.
two continental crusts converge.
an oceanic plate subducts under another plate, creating rising magma.
11
Earthquakes do not occur at divergent plate boundaries.
False
True
12
The many processes that occur during plate tectonics explain --
extreme weather events.
the rock cycle.
the water cycle.
why the seasons occur.
13
We know Earth's outer core is liquid because seismic P waves cannot travel through liquids.
True
False
14
Which one of the following was NOT evidence for Wegener's Theory of Continental Drift?
Mountain ranges line up when continents are joined.
Continents fit together like pieces of a puzzle.
Fossils of the same species were found on different continents.
Crust is older further from mid-ocean ridges.
15
Based on this diagram of major plates, which region of the US has the greatest tectonic activity?
East Coast
Florida Panhandle
West Coast
Gulf of Mexico
16
What geologic feature is created when oceanic crust subducts, melts, and forms magma?
tsunamis
fault-block mountains
earthquakes
volcanoes
17
The epicenter is the point where the earthquake occurred.
True
False
18
Which feature is NOT found at an oceanic to continental convergent plate boundary?
fold mountain
subduction zone
oceanic trench
volcanic mountains
19
Which layer IS broken up into tectonic plates?
asthenosphere
upper mantle
lithosphere
crust
20
Earth's geomagnetic field is created by --
convection in the mantle.
the flow of iron and nickel in Earth's core.
solar flares.
subducting plates at convergent boundaries.
