Which ocean has more numerous volcanoes around it?


Staff member
Jun 3, 2020
(A) Indian
(B) Atlantic
(C) Arctic
(D) Pacific

Volcanic eruptions occur only in certain places and do not occur randomly. The tectonic plates form Earth's crust as they float on a hot mantle. These rigid plates collide, spread apart or slide past each other. The volcanoes form due to such interactions when the magma spills upward through the cracks and vents. Sixty percent of all active volcanoes occur at the tectonic plate boundaries. Some volcanoes occur in the interior of tectonic plates at areas called hot spots. Although some volcanoes appear on land due to the collision of plates, most volcanoes occur on the ocean floor along the spreading ridges. These underwater volcanoes are called as submarine volcanoes. The presence of water can greatly alter the characteristics of a volcanic eruption and the explosions of underwater volcanoes in comparison to those on land. The volcanic eruptions at greater depths are difficult to detect using hydrophones. Scientists still have much to learn about the location and activity of underwater volcanoes.

Around 1,500 potentially active volcanoes are present worldwide, apart from the continuous belts of volcanoes on the ocean floor at spreading centers like the Mid-Atlantic ridge. Among these 1500 volcanoes, around 500 have erupted in historical time. Many of those are located along the Pacific Rim in what is known as the "Ring of fire." Volcanoes are more numerous around Pacific Ocean.

Answer: (D) Pacific


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