3030 students:
        Here's a table to help with your preparation for Question 8. An acceptable answer to Question 8 need not include all of these items. Let me know if you think of an item to add.
                            LBR  

Item #	Results from Item #	Pacific	Atlantic
Plate Tectonics
1	-	Ringed with trenches	Few trenches
2	1	Little continental rise	Broad continental rises
3	1	Many earthquakes	Few earthquakes
5	1	Faster seafloor spreading at MOR (EPR)	Slower seafloor spreading at MOR (MAR)
6	1	Contracting ocean basin	Opening ocean basin
7	11	Has oldest oceanic crust	Doesn't
8	5	Chains of ocean islands and seamounts from hotspots	Aseismic ridges from hotspots
9	5	Broader, less peaked, mid-ocean ridge	Narrower, more peaked, mid-ocean ridge
Geography
11	-	Larger	Smaller
12	-	Small opening (Bering Straits) to Arctic	Large opening (North Atlantic) to Arctic
13	-	Few tropical marginal seas	Tropical margnial seas (Caribbean, Mediterranean)
14	-	No notable Antarctic marginal sea	Weddell Sea at Antarctic end of ocean
15	1	Drains proportionately little land area	Drains proportionately large land area
Circulation
21	11?	Noteworthy equatorial countercurrent	Lesser equatorial countercurrent
22	?	Periodic breakdown in equatorial winds and currents (ENSO)	Less pronounced periodicity
25	12, 13, 14, 31	Little formation of deep water ("Downwelling")	Major formation of deep water ("Downwelling")
26	11, 25	Significant upwelling	Less upwelling
Chemistry
31	13	Lower average salinity	Higher average salinity
32	25	Greater concentration of nutrients in deep water	Lower concentration of nutrients in deep water
33	25	Lower oxygen concentration in oxygen minimum zone	Greater oxygen concentration in oxygen minimum zone
34	25	Greater concentration of CO2 in deep water	Lower concentration of CO2 in deep water
35	25	Lower concentration of scavenged elements in deep water	Greater concentration of scavenged elements in deep water
Bioloogy
41	26, 32	More extensive areas of high productivity	Less extensive areas of high productivity
Sediments
51	34	Proportionately less seafloor covered by carbonate oozes	Proportionately more seafloor covered by carbonate oozes
52	41	Large area of seafloor covered by radiolarian ooze	Little area of seafloor covered by radiolarian ooze
53	11, 51	Large areas of seafloor covered by red (abyssal) clays	Proportionately less area of seafloor covered by red (abyssal) clays
54	11, 53	Large areas of seafloor with significant Mn nodules	Relatively little seafloor with significant Mn nodules
Waves
61	1	More extensive coastal surf	Weak coastal surf
62 (was 4)	3	Many tsunamis	Few tsunamis

 

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