Practice IB Geography Topic B.3 Managing Coastal Margins with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for B.3 Managing Coastal Margins and mirrors Paper 1, 2, 3 style where relevant.
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The map below shows an overview of thermohaline circulation.
Source: SEAICE Portal
(a) one ocean region where surface flow moves warm water toward the poles.
(b) the direction of bottom flow in the Southern Ocean.
(d) two effects of thermohaline circulation on global climate patterns.
(e) how the disruption of thermohaline circulation could impact human societies.
(f) the importance of ocean circulation in maintaining planetary energy balance.
The map below shows The Overview of Thermohaline Circulation.
Source: SEAICE Portal
(a) Using the map, one ocean region where deep water forms.
(b) Using the map, the direction of bottom flow in the Southern Ocean (around Antarctica).
(c) Using the map, one reason why deep water forms in the Labrador or Greenland Sea.
(d) one effect of thermohaline circulation on global climate patterns.
The graph below shows global fisheries and aquaculture production (million tonnes).
Source: Food and Agriculture Organisation (FAO)
(a) Using the graph, when total aquaculture production (marine and inland combined) first exceeded total capture fisheries production.
(b) Using the graph, the approximate total global fish production in 2020.
(c) Using the graph, the overall trend in global aquaculture production from 1950 to 2020.
(d) one environmental or socio-economic reason for the rise of aquaculture as a source of fish production.
The graph shows the relative strength of El Niño and La Niña events from 1950 to 2024.
(a) Using information on the graph changes in the duration of La Niña events from 1980 to 2024.
(b) one economic benefit and one environmental benefit of mangrove swamps.
(c) Using information on the graphdescribe the changes in the strength of El Niño events from 1980 to 2003.
(d) the relationships between oceanic sovereignty rights of nations and exclusive economic zones (EEZs).
The map below shows the fish catch (tonnes per square kilometre) globally
Source: Based on Alhenius, H., (2008), Food and Agriculture Organisation (FAO)
(a) one region with the highest fish catch intensity
(b) one region with the lowest fish catch intensity.
(c) the global spatial pattern of fish catch intensity shown in the map.
(d) two physical or environmental factors that influence fish catch productivity in coastal waters.
(e) one other effect of thermohaline circulation on global climate patterns.
(f) how the disruption of thermohaline circulation could impact human societies.
(e) one environmental impact of increasing global aquaculture production.
(f) the implications of changing global fish production trends for food security.
(e) the environmental consequences of overfishing in high-intensity fish catch regions.
(f) the challenges of achieving sustainable fishery management in regions of high fish catch.
