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Earth Science - Plate Tectonics Flashcards | StudBud
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Earth Science - Plate Tectonics
Earth Science - Plate Tectonics
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Plate Tectonics - First Quarter
Flashcards
15 cards
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Questions
15
Answers
1
What is being formed when an oceanic plate subducts to a continental plate?
mountain range
plateau
volcanic arc
trench
2
These types of plate boundary are also called destructive boundaries because the plate materials are subducted.
divergent boundaries
fault valley
transform-fault boundaries
convergent boundaries
3
Which part of Earth are the tectonic plates made of?
lithosphere
asthenosphere
outer core
inner core
4
What is a deep crack that runs through the center of a mid-ocean ridge?
tectonic plate
volcanic arc
rift valley
trench
5
The lithosphere consists of 7 major plates that move and interact in various ways. Which of the ff is not a major plate?
Eurasian Plate
South American Plate
Cocos Plate
African Plate
6
These are plate boundaries usually found at right angles to the mid-ocean ridges.
rift valleys
divergent boundaries
transform boundaries
convergent boundaries
7
Type of convergent plate boundaries where denser oceanic slab sinks into the aesthenosphere forming continental vol arcs
Oceanic-Oceanic
Oceanic-Continental-Oceanic
Continental-Continental
Oceanic-Continental
8
This is when rocks show the opposite magnetism as the present magnetic field of the Earth.
Paleomagnetism
Normal Polarity
Reverse Polarity
Magnetism
9
What theory explains the formation of Earth's crust and its movement?
Continental Drift
Seafloor spreading
Magnetic polarity
Plate Tectonics
10
Which of the following statements is TRUE regarding seafloor spreading at a mid-ocean ridge?
The continents flow through the oceanic crust.
An older oceanic crust is slowly pushed away from the ridge.
The rock layers in the ridge have an alternating magnetic polarity.
Earth's magnetic field reverses about every half a million years.
11
Type of convergent boundaries where two continents collide forming mountain ranges.
Continental-Continental
Oceanic-Oceanic
Oceanic-Continental-Oceanic
Oceanic-Continental
12
Convection current tells that the cooler mat. ____ to Earth's core, while hotter material ___ to replace the cooler mat.
shrinks, expands
expands, shrinks
rises, sinks
sinks, rises
13
What was the objection that critics had about Wegener's Continental Drift Theory?
Wegener's fossil evidence was not accurate.
His idea of the mechanism capable of moving the continents was impossible.
Wegener could not provide any evidences to support the theory.
Wegener's findings had no basis.
14
Two oceanic slabs converge and one descends beneath the other forming volcanoes on the ocean floor.
Oceanic-Continental
Continental-Continental
Oceanic-Continental-Oceanic
Oceanic-Oceanic
15
Which evidence supports the continental drift theory?
location of the earthquake
ocean currents
rocks and fossils
magnetic north and south poles