Practice IB Geography Topic Option B Oceans and Coastal Margins with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Option B Oceans and Coastal Margins and mirrors Paper 1, 2, 3 style where relevant.
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Identify one ocean region where surface flow moves warm water toward the poles.
Identify the direction of bottom flow in the Southern Ocean.
Outline one reason why deep water forms in the Labrador or Greenland Sea.
Explain two effects of thermohaline circulation on global climate patterns.
Examine how the disruption of thermohaline circulation could impact human societies.
Discuss the importance of ocean circulation in maintaining planetary energy balance.
The map below shows The Overview of Thermohaline Circulation.
Using the map, identify one ocean region where deep water forms.
Using the map, identify the direction of bottom flow in the Southern Ocean (around Antarctica).
Using the map, outline one reason why deep water forms in the Labrador or Greenland Sea.
Explain one effect of thermohaline circulation on global climate patterns.
Explain one other effect of thermohaline circulation on global climate patterns.
Examine how the disruption of thermohaline circulation could impact human societies.
The graph below shows global fisheries and aquaculture production (million tonnes).
Using the graph, identify when total aquaculture production (marine and inland combined) first exceeded total capture fisheries production.
Using the graph, estimate the approximate total global fish production in 2020.
Using the graph, describe the overall trend in global aquaculture production from 1950 to 2020.
Explain one environmental or socio-economic reason for the rise of aquaculture as a source of fish production.
Explain one environmental impact of increasing global aquaculture production.
Examine the implications of changing global fish production trends for food security.
Examine the relationship between the Indian Ocean Dipole (IOD) and extreme weather events.
Describe two physical processes that contribute to the formation of a wave-cut platform.