Which coastline is emerging or rising above sea level?
a) The Pacific Coast is tectonically active producing mountain chains and marine terraces.
b) The Atlantic Coast is a passive margin moving away from the Mid-Atlantic Ridge.
c) The Pacific Coast has earthquakes that foster a rise in sea level.
d) The Atlantic Coast has barrier islands due to littoral drift.
e) Flow is generally southward on both the Atlantic and Pacific coasts.
Question 2
Why are abyssal plains not as well developed in the Pacific Ocean as they are in the Atlantic Ocean?
a) The deep ocean trenches of the Pacific Ocean act like gutters that trap sediment transported off the land by turbidity currents
b) Turbidity currents travel directly down the continental margin and deposit sediment
c) Abyssal plains occur only in Earth's eastern hemisphere
d) Organisms disrupt deposition of fine sediment in the Pacific Ocean basin
e) Suspension settling in the Pacific Ocean occurs much faster than in the Atlantic Ocean
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