Earth Science: Geology, the Environment, and the Universe

Section 1: Drifting Continents

Drifting Continents

1
What evidence did Wegener use to estimate the time of Pangaea's break up?
A)magnetic isochrons
B)coal deposits
C)ocean-floor topography
D)fossil data
2
What is the name of Alfred Wegener's hypothesis about moving landmasses?
A)continental movement
B)plate tectonics
C)continental drift
D)seafloor spreading
3
The supercontinent from Wegener's theory of continental drift is called __________.
A)Gondwanaland
B)Pangaea
C)North America
D)Laurasia
4
What was one reason that Wegener's hypothesis of continental drift was rejected?
A)He could not explain what was moving the continents.
B)He could not support the idea that climates of certain landmasses had been different .
C)He could not support that the continents were once adjacent.
D)He could not explain where the continents had moved.
5
Wegener proposed that the continents were __________.
A)plowing through oceanic crust
B)formed at deep ocean trenches
C)formed at mid-ocean ridges
D)floating on top of oceanic crust
6
Which type of information was NOT collected by Wegener to support his continental drift hypothesis?
A)fossils
B)seafloor magnetic data
C)rocks
D)glacial deposits
7
Why did Wegener think that the Antarctic continent had been closer to the equator in the geologic past?
A)existence of volcanic rocks
B)evidence of fossil fish
C)existence of coal beds
D)existence of the Transantarctic Mountains
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