Multiple Choice
Oceanic lithosphere thickens as it moves away from mid-ocean ridges primarily because of
A) the addition of new crust due to hot-spot volcanism.
B) the addition of new crust due to sedimentation.
C) the addition of new lithospheric mantle as a result of cooling.
D) reasons that geologists cannot determine at present.
Correct Answer:

Verified
Correct Answer:
Verified
Q19: The idea that the continents had once
Q20: Paleomagnetic evidence for seafloor spreading is found
Q21: Lithospheric plates move relative to other along
Q22: What are magnetic anomalies? Why are these
Q25: Mid-ocean ridges are<br>A) associated with continental hot
Q27: Transform plate boundaries are unlike other plate
Q28: Which basic type of plate boundary is
Q29: Subduction zones are found at _ plate
Q38: Seafloor spreading is driven by volcanic activity<br>A)
Q54: At a subduction zone,the downgoing (subducting)plate<br>A) is