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Chapter 7 - Plate Tectoniocs Flashcards | StudBud
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Chapter 7 - Plate Tectoniocs
Chapter 7 - Plate Tectoniocs
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Chapter 7 Test Review
Flashcards
27 cards
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Practice quiz
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Questions
27
Answers
1
Plates slidepast one another at ____.
divergent boundaries
subduction zones
convection currents
transform boundaries
2
Continentaldrift states that continents have moved ____ to their current location.
very little
vertically
slowly
quickly
3
The crust andupper mantle make up Earth's ____.
lithosphere
continents
asthenosphere
core
4
The result of plate movementcan be seen at
plate centers
ocean margins
abyssal plains
plate boundaries
5
Active volcanoes are most likely to form at ____.
divergent boundaries
the center of continents
convergent oceanic–continental boundaries
transform boundaries
6
The Himalayanmountain range of India was formed at a ____.
convergent boundary
divergent boundary
hot spot
transform boundary
7
15. A ____ can alsoform when two oceanic plates collide.
transform boundary
line of volcanoes
hot spot
rift valley
8
Continental-continentalplate collisions produce ____.
very tall mountain ranges
island arcs
deep-sea trenches
rift valleys
9
Seafloorspreading occurs because ____.
sediments accumulate at the area of spreading
molten material beneath Earth's crust rises to the surface
new material is being added to the asthenosphere
earthquakes break apart the ocean floor
10
____ currentsinside Earth might drive plate motion.
Conduction
Vertical
Horizontal
Convection
11
Many earlymapmakers thought Earth’s continents had moved based on ____.
fossil evidence
plate boundary locations
climatic data
matching coastlines
12
Plates of thelithosphere float on the ____.
crust
atmosphere
asthenosphere
core
13
While studying the ocean floor, scientists found ____ bands of magnetism.
plastic
alternating
rectangular
no
14
All land was once a single supercontinent called ____
Pangaea
Wegener
Glomar
Glossopteris
15
rock onthe seafloor showing alternating magnetic orientation indicate Earth's magneticfield has
weakened
remained the same
become stronger
reversed itself in the past
16
The youngest part of the ocean floor is found ____.
where ocean sediments are thickest
near ocean ridges
where Earth’s magnetic field changes polarity
along deep sea trenches
17
The hypothesisthat continents have slowly moved to their current locations is called ____.
continental drift
convection
magnetic reversal
continental slope
18
The boundarybetween two plates moving together is called a ____.
lithosphere
convergent boundary
transform boundary
divergent boundary
19
Plates move apart at ____ boundaries.
divergent
convergent
transform
stable
20
____ are formedwhen two continental plates collide.
Volcanoes
Mountain ranges
Strike-slip faults
Rift valleys
21
the continents move apart or come together at speeds of a few centimeters per
Decade
Year
Century
Day
22
Features foundat divergent plate boundaries include ____.
island arc volcanoes
deep-sea trenches
mid-ocean ridges
crumpled mountains
23
In order tocomplete a convection current, the rising material must eventually ____ Earth.
sink back into
stop inside
warm
cool
24
The youngest rocks on the ocean floor are located ____.
near Asia
at mid-ocean ridges
near continents
far from mid-ocean ridges
25
Wegener believed thatthe continents were assembled as part of a supercontinent ____ Years ago
400 million
300 million
250 million
500 million
26
Matching ____on different continents are evidence for continental drift.
weather patterns
river systems
wind systems
rock structures
27
A vast,underwater mountain chain is called a(n) _________.
ocean floor sediment
ocean ridge
deep-sea trench
oceanic crust