Unit 8: Option B — Oceans and Coastal Margins
Topic 8.1: Ocean–atmosphere interactions Questions
Practice 20 exam-style questions for IB Geography Topic 8.1. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1Explain3 marks
Explain why tropical storms form mainly between about 5 and 20 degrees latitude and not on the Equator itself.
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A tropical storm in the Indian Ocean is usually called a…
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The minimum sea-surface temperature a tropical storm needs is about…
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Tropical storms get most of their energy from…
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Suggest how warming oceans could increase the risk that tropical storms pose to a low-lying coast.
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Explain why a tropical storm weakens once it moves over land or cooler water.
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Outline two conditions, other than a warm ocean, that are needed for a tropical storm to form.
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Explain how a warm ocean provides the energy that powers a tropical storm.
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Explain how an El Nino event affects the upwelling and fishery off the coast of South America.
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Explain how the thermohaline conveyor belt redistributes heat and nutrients around the world's oceans.
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Outline why tropical storms tend to form over warm tropical oceans.
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Outline one reason why tropical storms become more active when the ocean surface is warmer.
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The table summarises the surface-current directions around the edge of the North Pacific Gyre.
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The table shows the ocean temperature anomaly (difference from the long-term average) in the eastern Pacific during selected ENSO events.
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The table summarises where four tropical-storm types occur and the usual direction of their tracks.
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During an El Nino event, the eastern Pacific Ocean off Peru becomes…
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Identify and explain one way a La Nina event alters the climate or weather of a named region.
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The thermohaline conveyor belt is driven mainly by differences in…
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Upwelling supports large fisheries because it brings…
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Which factor lets a tropical storm spin?
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