Section #: 17.1
Drifting Continents
Practice Test
1.
What is the name of Alfred Wegener's hypothesis about moving landmasses?
SC.D.1.4.3
a.
continental movement
b.
continental drift
c.
plate tectonics
d.
seafloor spreading
Hint
2.
Why did Wegener think that the Antarctic continent had been closer to the equator in the geologic past?
SC.D.1.4.3
a.
existence of coal beds
b.
evidence of fossil fish
c.
existence of the Transantarctic Mountains
d.
existence of volcanic rocks
Hint
3.
The supercontinent from Wegener's theory of continental drift is called __________.
SC.D.1.4.3
a.
North America
b.
Laurasia
c.
Pangaea
d.
Gondwanaland
4.
Which type of information was NOT collected by Wegener to support his continental drift hypothesis?
SC.D.1.4.3
a.
seafloor magnetic data
b.
glacial deposits
c.
rocks
d.
fossils
5.
What evidence did Wegener use to estimate the time of Pangaea's break up?
SC.D.1.4.3
a.
magnetic isochrons
b.
fossil data
c.
ocean-floor topography
d.
coal deposits
Hint
6.
What was one reason that Wegener's hypothesis of continental drift was rejected?
SC.D.1.4.3
a.
He could not support the idea that climates of certain landmasses had been different .
b.
He could not explain where the continents had moved.
c.
He could not support that the continents were once adjacent.
d.
He could not explain what was moving the continents.
Hint
7.
Wegener proposed that the continents were __________.
SC.D.1.4.3
a.
formed at mid-ocean ridges
b.
floating on top of oceanic crust
c.
plowing through oceanic crust
d.
formed at deep ocean trenches
