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