A vent in the Earth's crust through which molten rock flows is a

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Multiple Choice

A vent in the Earth's crust through which molten rock flows is a

Explanation:
Think about the journey of molten rock. Inside the Earth it’s magma, and when it reaches the surface and erupts, it becomes lava. The opening through which that molten rock escapes and the eruptive feature that forms around it is a volcano. A ridge, by contrast, is a long, raised feature along plate boundaries, not a vent. So the term that describes the vent through which molten rock flows is volcano, because it names the surface opening and the volcanic system itself, not the molten rock in its underground or erupted form.

Think about the journey of molten rock. Inside the Earth it’s magma, and when it reaches the surface and erupts, it becomes lava. The opening through which that molten rock escapes and the eruptive feature that forms around it is a volcano. A ridge, by contrast, is a long, raised feature along plate boundaries, not a vent. So the term that describes the vent through which molten rock flows is volcano, because it names the surface opening and the volcanic system itself, not the molten rock in its underground or erupted form.

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