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Chapter 17 Plate Tectonics Flashcards | StudBud
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Chapter 17 Plate Tectonics
Chapter 17 Plate Tectonics
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1
Coal beds in Antarctica indicated to Wegener that this continent was
always cold
inhabited by penguins
once located closer to the equator
once beneath the ocean
2
Weight of subduction plate help pull the trailing lothospere into a subduction zone?
conduction
ridge push
seafloor spreading
slab pull
3
Plates that come together is known as
subduction
convergent boundaries
divergent boundaries
transform boundaries
4
Oceanic crust is made mostly of
basalt
granite
sediments
water
5
Places where plates slide horizontally past each other
transform
divergent
convection
convergent
6
Which is related to the movements of tectonic plates?
convention currents in the mantle
transfer of heat
major changes in Earth's climate
Earth's rotation around the sun
7
Tectonic plates interact at places called plate
regions
boundaries
reversals
subductions
8
Where is the youngest ocean crust found?
at deep sea trenches
along transform boundaries
in the center of tectonic plates
at ocean ridges
9
What did Alfred Wegener cite as evidence for continental drift?
magnetic patterns of the ocean floor
measurements of the rates of movements of continents
The occurrence of similar fossils
differences in density between continental and oceanic plate
10
Wagener's hypothesis was called
theory of plate tectonics
transform boundaries
continental drift
ridge push
11
North America was once part of a single super continent called Pangaea what theory was this?
continental drift
ridge push
seafloor spreading
plate tectonics
12
a process that occurs at convergent boundaries
slab pull
subduction
divergent boundaries
ridge push
13
A change in Earth's magnetic field is called
rift valley
Pangaea
ridge push
Magnetic reversal
14
Earth's continents were once joined as a single landmass called
big earth
Pangaea
Isochron
rift valley
15
The study of Earth's magnetic record
slab pull
paleomagnetism
isochron
transform
16
Places where plates move apart
subduction
convergent boundaries
divergent boundaries
transform boundaries
17
Compared to ocean crust near deep sea trenches, crust near ocean ridges are
younger
same age
older
18
Which results in the formation of folded mountain ranges like the Himalayan mountains?
oceanic- continental boundary
transform boundary
continental-continental convergent boundary
divergent boundary
19
Which phenomenon occurs along a transform boundary?
erupting of a volcano
uplifting of the ground
occurrence of an earthquake
formation of a rift valley
20
Process that occurs at convergent boundaries
convergent
rift valley
slab pull
subduction
21
A map line connecting points that have the same age is
paleomagnetism
convection
rift valley
isochron
22
Sound waves used to measure water depth
uncle crackers submaries
mountain chains
sonar
deep=sea trenches
23
Which of the following is true of Earth's magnetic field?
small changes in it cannot be detected with a magnetometer
iron- bearing minerals in rocks provide a record of it
it has remained the same throughout Earth's history
its present polarity is reversed
24
Wen you warm liquid on the stove, what is the transfer of energy?
convergence
subduction
speading
convection
25
Long, narrow, fault-bounded, continental depression
Magnetic Reversal
ridge push
rift valley
Pangaea