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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
Plate Tectonics
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Plate tectonics test
Flashcards
33 cards
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Practice quiz
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Questions
33
Answers
1
Which of Earth's layers is the thinnest?
crust
mantle
core
2
Which kind of plate boundary occurs between plates A and B (write letters on image)
divergent boundary
transform boundary
convergent boundary
3
Interpreting Diagrams: What kind of plate boundary is shown in the diagram?
convergent boundary
transform boundary
divergent boundary
4
How much do the lithospheric plates move in one year?
a few centimeters
thousands of kilometers
a few kilometers
thousands of centimeters
5
The process in which continents slowly move is called
continental drift
subduction
sea-floor spreading
6
Which of the following statements best describes the process shown in the diagram above
occurs very quickly on a global scale
occurs very quickly on a local scale
occurs very slowly on a local scale
occurs very slowly on a global scale
7
Earth's inner core consists of
liquid metals
soft, tarlike rock
solid metals
cool rock
8
In earth's interior, which of the following increases with increasing depth?
temperature
pressure
all of the above
density
9
Applying concepts: in which 2 layers do convection currents occur? (add numbers 1-4)
1 and 2
2 and 3
3 and 4
10
Between what two layers would you draw a line to show the top of the asthenosphere? *add number
1 and 2
3 and 4
2 and 3
11
Applying Concepts: Which process happens at this kind of boundary? (write letters on image)
sea-floor spreading
subduction
converging
12
Pangaea was Alfred Wegener's name for
the process that moves Earth's plates
l;andmass made up of all the continents
the lithosphere
the places where plates meet
13
Most of the world's folded mountains formed as a result of
oceanic-oceanic separation @ mid-ocean ridges
continental-continental collision @ convergent boundaries
continental-ocenaic collision @ subduction zones
continental-continental separation @ rift zones
14
Once magma reaches the surface it is called
silica
lava
rock
15
The thin layer of cool rock that makes up Earth's surface is called the
mass
mantle
core
crust
16
How do mid-ocean ridges support the idea of continental drift & the theory of plate tectonics?
Tectonic plates collide at mid-ocean ridges
Oceanic lithosphere is destroyed at mid-ocean ridges
the crust at mid-ocean ridges is old oceanic lithosphere
New crust forms at mid-ocean ridges
17
At a mid-ocean ridge, molten rock rises up & cools to form new ocean floor; mid-ocean ridge is
C
B
D
A mid-ocean ridge
18
Matching fossils & rock types on continents that are separated by ocean today supports the idea
all the continents of the world are basically the same
islands once linked all the continents
all continents arose in their present positions @ same time
the continents were formerly joined & moved apart
19
Which of Earth's layers has the highest temperature?
crust
mantle
core
20
Explosive volcanic eruptions and strong earthquakes often occur at
divergent boundaries
all types of plate boundaries
transform boundaries
convergent boundaries
21
Earth's plates move because of
conduction
convection currents
seismic waves
22
Which choice names Earth's layers in order from 1 to 4
crust, outer core, inner core, mantle
mantle, inner core, outer core, crust
crust, mantle, outer core, inner core
23
Most major earthquakes, volcanoes, and mountain ranges occur
in North & South America
in the middle of tectonic plates
where tectonic plates meet
along the edges of continents
24
The mantle is a layer of
hot rock between the crust and the core
soft metal between the inner & outer core
cool rock that covers Earth's surface
liquid metal between the crust and the core
25
A boundary where two plates push together is called
convergent boundary
divergent boundary
transform boundary
26
What happens in sea-floor spreading?
old rock is pushed toward the middle of the ocean
New rock forms
New rock sinks into the mantle
27
Which of the following compositional layers makes up the greatest percent of Earth's mass?
continental crust
oceanic crust
the mantle
the core
28
Relating cause & effect: What causes the convection currents labeled A? (label A and B)
pressure in the inner core
heat inside the mantle and core
compaction on the surface
29
Scientists think all present-day continents were once joined in a single super-continent called
Gondwana
Panthalassa
Laurasia
Pangaea
30
Inferring: What causes magma to form at this plate boundry
oceanic plate sinks beneath the continental plate & melts
continental plate pushes magma up from the mantle
contnental plate gets warmer and melts
31
The convection currents labeled cause
sea floors to spread
continents to drift
Earth to be a giant magne
32
The process by which the ocean floor sinks beneath a deep-ocean trench & back into the mantle
subduction
continental drift
conduction
convection
33
How does fossil evidence support Wegener's hypotheses of continental drift?
Similar fossils found on far apart landmassess suggest
Fossil evidence suggests the continents have always been
plant & animal fossil show evidence of change Earth polarity
no similarities exist btween fossils on diff. continents
