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Continental Drift/ Sea Floor Spreading Flashcards | StudBud
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Continental Drift/ Sea Floor Spreading
Continental Drift/ Sea Floor Spreading
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Used for review in Earth Science before a test on Sea Floor Spreading.
Flashcards
18 cards
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Practice quiz
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Host live
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Questions
18
Answers
1
What force is cited as the driving force that moves the ocean plates?
Earthquakes
Volcanoes
Ocean Currents
Convection Currents
2
Which one of the following is
not
evidence for a one time supercontinent.
Glacier Marks
Magnetism
Mountain Ranges
Fossils
3
Alfred Wegener used
sonar
to help him determine if the continents were moving.
False
True
4
The presence of coal in Antarctica means that this continent must have
had tropical weather
moved over time
changed climate
all of these
5
What is it called when oceanic crust goes down into the mantle under the continental crust?
subduction zone
A. Divergent boundary
superposition
sublimation
6
The oceanic crust is thicker and more dense than the continental crust.
True
False
7
Which scientist proposed that the ocean floor was expanding around mid ocean ridges?
Harry Hess
Albert Einstein
Alfred Wegener
Alfred Neuman
8
Alfred Wegener showed that the sea floor was spreading and moved the continents
True
False
9
The Pacific Ocean is
Contracting
Expanding
10
The mid ocean ridge is which one of the following?
Divergent Boundary
Convergent Boundary
11
Which one of the following is
not
an evidence for sea floor spreading?
Age of the Rocks
Magnetic Pattern
Type of Rock
12
What type of boundary is it when an ocean plate meets a continental plate?
Convergent
Insurgent
Subduction
Divergent
13
Which one of the following is not true of Harry Hess?
Scientist
Navy Officer
All true
Harvard Professor
14
Magma that turns into rock at the mid ocean ridge, has iron crystals that record
Earth's magnetism
Earth's cosmic rays
Earth's History
Earth's gravity
15
What is the name of the supercontinent when all the continents were connected?
Laurasia
Godwana
Panama
Pangaea
16
What feature is usually found over subduction zones?
Mountain Ranges
Volcanoes
Earthquakes
All of these
17
Apparently, the earth's magnetic poles have reversed in the past.
False
True
18
Which one of the following is not in the mid ocean ridge?
Ocean Trench
New Rock
Rift Valley
Volcanic Activity
