Physical Geography of Oceania — Quiz

Question 5 • World Geography (Full Year)

How did the Hawaiian Islands form over time?

Answer

Magma slowly bubbled up from beneath the ocean, creating volcanic land that became islands.

Coral reefs grew along the ocean floor, gathering sediment and creating land that lies very close to sea level.

Parts of continents broke off and drifted toward the middle of the Pacific Ocean before stopping.

Tectonic plates moved and shifted, lifting the seabed above the sea level.

Explanation

The Hawaiian Islands formed as magma rose through the Pacific Ocean floor and erupted, building underwater volcanoes until they grew above sea level. As the Pacific Plate moved over a long-lasting volcanic hot spot, new volcanoes formed and older ones moved away from the source of magma. This created a chain of volcanic islands, not coral-built land or lifted pieces of continent.

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