What Is the Opening of a Volcano Called?

Answer

The opening of a volcano is called a crater or vent. Volcanoes are normally formed by tectonic movement that takes place at convergent plate boundaries and divergent plate boundaries.
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1 Additional Answer
The opening of a volcano where molten rock and gases escape is called the vent and the bowl like opening is called a crater. Lava is the term used to describe the molten rock that erupts from the volcano.
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