The main way new oceanic crust is created is by
A. eruption of lavas and solidification of magmas at depth.
B. continents that subside below sea level.
C. sediment scraped off a subducting slab.
D. magmas along an ocean-continent convergent boundary.
E. continental rifting, before the continents separate.
Answer: A
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Use this stream-related diagram to answer the following questions.
Predict where channel roughness is greatest.
A. Point A B. Point B C. Point C
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What is mean by a geostrophic current?
What will be an ideal response?