The map below shows the distribution of earthquakes and volcanoes around the Pacific Ocean.

[Map showing the 'Ring of Fire' with earthquake epicentres and volcanic locations marked]

Which statement best explains why earthquakes and volcanoes are concentrated in this pattern?

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Question

The map below shows the distribution of earthquakes and volcanoes around the Pacific Ocean.

[Map showing the 'Ring of Fire' with earthquake epicentres and volcanic locations marked]

Which statement best explains why earthquakes and volcanoes are concentrated in this pattern?

Accepted Answer

Several tectonic plate boundaries meet around the Pacific Ocean — Award 1 mark for recognising that the 'Ring of Fire' follows plate boundaries where plates converge, diverge, or slide past each other. A is incorrect — ocean depth does not determine earthquake or volcanic distribution. C is incorrect — water pressure does not cause volcanic eruptions; magma rising from the mantle does. D is incorrect — the Pacific Ocean floor is actually younger in places due to sea-floor spreading.

Answer

Several tectonic plate boundaries meet around the Pacific Ocean

Answer

Ocean water pressure causes volcanic eruptions

Answer

The Pacific Ocean is the deepest ocean on Earth

Answer

The Pacific Ocean floor is older than other ocean floors

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