Main Idea: Volcanoes A. Structure of volcano

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Main Idea: Volcanoes A. Structure of volcano Volcanoes contain a vent, crater and slopes. A vent is an opening in the crusts surface in which lava is emitted. A crater is connected to the magma chamber that is located near the vent. B. What

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Main Idea: Volcanoes<br>
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A. Structure of volcano Volcanoes contain a vent, crater and slopes.
A vent is an opening in the crusts surface in which lava is emitted.
A crater is connected to the magma chamber that is located near the vent.<br>
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B. What is a caldera? A caldera is sometimes confused with a crater.
They differ in size.
A caldera is around 50 km in diameter, while a crater is at most 1 km in diameter.<br>