iClicker exam 2 Flashcards
1
Q
The contraction theory implied that Earth’s features formed through the process of:
A
Cooling and contracting
2
Q
What is the name of the late Paleozoic/early Mesozoic supercontinent that consisted of all the present continents?
A
Pangea
3
Q
Who proposed the theory of continental drift?
A
Alfred Wegener
4
Q
What data did Wegener use to prove that the continents had once been joined together?
A
Ancient climate data
5
Q
Although Wegener proposed his continental drift theory in 1915, it was not widely accepted until the 1960s. Why not?
A
Wegener’s model lacked a driving force for the movement of the continents
6
Q
Who proposed the theory of seafloor spreading based on maps of the ocean floor?
A
Harry Hess
