How Do Volcanoes Form and Erupt Underwater and How Does the Mid-Ocean Ridge Form New Oceanic Crust?

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How Do Volcanoes Form and Erupt Underwater and How Does the Mid-Ocean Ridge Form New Oceanic Crust?

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Volcanoes can and do form underwater, and in fact most volcanoes are on the ocean floors, not on land. A chain of volcanoes below the sea circles the earth for more than 30,000 miles (48,300 km), standing, on average, about 18,000 feet (5,486 m) above the sea floor. This chain is called the Mid-Ocean Ridge. Here, tectonic plates