Multiple Choice
Identify all of the different observations used to support Harry Hess's theory of seafloor spreading.
A) Seafloor magnetic anomalies
B) Geographic fit of the continents
C) Studies of fossil plants and animals
D) Dipping zones of earthquakes at ocean trenches
E) Patterns of glaciation
F) Shallow earthquakes along transform faults
G) Matching bodies of rock on either side of the Atlantic
H) Alignment of mountain ranges when the Atlantic is closed
I) High heat flow at oceanic ridges
Correct Answer:

Verified
Correct Answer:
Verified
Q11: The deepest earthquakes occur in subduction zones
Q22: The deepest portion of the lithosphere is
Q24: Isostatic columns of crustal material produce equal
Q43: S waves are able to travel through
Q44: A fixed volcanic hot spot on Earth
Q55: Hess's 1960s theory of mantle convection and
Q68: The oldest oceanic crust is generally in
Q69: The steeper profile of the Mid-Atlantic Ridge
Q75: All of the following statements apply to
Q77: A hot spot trace typically includes _.<br>A)