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Duplicate of Chapter 5 test review Flashcards | StudBud
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Duplicate of Chapter 5 test review
Duplicate of Chapter 5 test review
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StudBud Administration
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plate tectonics
Flashcards
48 cards
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Practice quiz
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Questions
48
Answers
1
edge where two lithospheric plates move apart
transform plate boundary
convergent plate boundary
divergent plate boundary
2
very flat areas that make up most of the ocean floor
transform fault
hotspot
mid ocean ridge
abyssal plain
3
new oceanic crust is created
at mid-ocean ridges
at long, linear chains of volcanoes
at deep sea trenches
within abyssal plains
4
plume of hot material that rises through the mantle and can cause volcanoes
guyot
mid ocean ridge
hotspot
epicenter
5
an island arc forms when an oceanic plate subducts beneath an oceanic plate
true
false
6
in the Hawaiian islands, the youngest volacno is
above a hot spot
topped by limestone
above a mid-ocean ridge in the Pacific
about to subduct into a deep sea trench
7
Wegener explained that Mesosaurus fossils were found on Africa and S. America this way
Mesosaurus swam across the Atlantic Ocean
Africa and S. America were joined together then broke apart
none of these
a land bridge across the Atlantic connected the 2 continents
8
the mechanism for moving continents
continental drift
sea floor spreading
subduction
continental rifting
9
the outlines of the plates are located by mapping
mid-ocean ridges
earthquake epicenters
continental margins
the locations of earthquake faults
10
Wegener gave up on continental evidence because he had no mechanism
false
true
11
Mountain ranges on both sides of the Atlantic
have ancient fossils and coal seams
are just separate mountain ranges
have the same rock types, structures and ages
are the same height and width
12
the most common type of minerals that record the direction of the magnetic field
coal
magnetite
iron
copper
13
edge where two lithospheric plates slide past one another
transform plate boundary
transform fault
mid ocean ridge
plate boundary
14
the magnetic north pole
is in the southern hemisphere
is in the same place as the geographic north pole
has moved over the years
is in northern Canada
15
deepest parts of the ocean
abyssal plain
mid ocean ridge
guyots
trench
16
submerged,outer edge of the continent
continental margin
abyssal plain
guyot
mid ocean ridge
17
before they could make seafloor maps, scientists thought the seafloor was
was completely flat
had many long mountain ranges, like Japan
was dotted with lots of small hills, but nothing else
was just like the topography of the continents
18
sinking of one lithospheric plate beneath another
divergence
subduction
convergence
transform
19
when were the continents last all joined together
3 billion years ago
3 million years ago
300 million years ago
30 million years ago
20
Plate tectonics theory states that
continents drift but scientistsw do not yet know why
Earth's geography is continually changing
Earth's geography has been the same for all time
all geological activity happens at plate boundaries
21
similar fossil records across continents was evidence for continental drift
false
true
22
What was Wetener's continental drift idea
the continents are moving slowly together
the continents have always been located where they are now
none of these
the continents have moved slowly apart
23
the magnetic polarity evidence indicates that there were two north magnetic poles in the past
false
true
24
edge where two lithosphere plates come together
transform plate boundary
convergent plate boundary
divergent plate boundary
25
slab of lithosphere that can move over Earth's surface
hotspot
plate
epicenter
trench
26
fracture in rock where one plate slides past another
transform fault
plate boundary
subduction
transform plate boundary
27
Volcanoes are found at ________plate boundaries
convergent and divergent
transform
convergent
divergent
28
since new oceanic crust is being created
none of these
mountains must be rising somewhere
old crust must be destroyed somewhere
the earth must be getting larger
29
coal is mined in many cold regions, but it forms in tropical climates
true
false
30
magnetic polarity stripes
end at the edge of a continent
end at a deep sea trench
a or b
end at a mid-ocean ridge
31
Scientists didn't accept the continental drift idea because
there was almost no evidence of it
wegener was not liked and no one listened to him
he couldn't explain the mechanism behind it
there were many other ways to explain the evidence
32
____crust subducts under ____crust because it is____
oceanic;continental;denser
continental;oceanic;buoyant
oceanic;continental;bouyant
continental;oceanic; denser
33
During the time of Pangaea there was no Atlantic Ocean
false
true
34
circular current of warm material rising and cool material sinking
plate boundary
continental rifting
guyot
convection cell
35
large, continuous mountain range found within an ocean basin
transform plate boundry
the rockies
transform fault
mid ocean ridge
36
point on Earth's surface directly above the focus of an earthquake
volcano
transform fault
epicenter
37
During the time of Pangaea organisms now separated by continents lived side by side
false
true
38
location where two lithospheric plates meet
sea floor spreading
plate boundary
convection cell
epicenter
39
the thickest sediments in the ocean basins are found
in the flat, featureless regions
in the furthest distance from the mid-ocean ridge
none of these
at the top of the mid-ocean ridge
40
the best explanation for the past magnetic polarity of Europe and North America is
none of these
the pole stood still and the continents moved
the north magnetic pole moved
the continents mo9ved and the north pole moved
41
Earthquakes happen at ________plate boundaries
convergent
divergent
transform
all three
42
Like the Cascades, the Sierra Navadas are the result of
subduction of an oceanic plate beneath a continental plate
ocean-ocean convergence
transform motion like that at the San Andreas Fault
continent-continent convergence
43
splitting of a continent at a divergent plate boundary
mid ocean ridge
transform fault
continental rifting
continental drift
44
the continents including the continental margins can be pieced together like a puzzle
true
false
45
the longer it takes for a sound wave to return to the ship
the shallower the water is
the colder the water is
the more layered the water is
the deeper the water is
46
early 20th century hypothesis that the continents move over Earth's surface
continental drift
subduction
convergent plate boundry
sea floor spreading
47
magnetic polarity evidence supports the theory of continental drift
false
true
48
flat topped underwater mountain
hotspot
mid ocean ridge
guyot
abyssal plane
