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