Can a mountain turn into a volcano?

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Keeping this in consideration, what is the mouth of a volcano called?

Crater - Mouth of a volcano - surrounds a volcanic vent. What is at the bottom of a volcano? Crater: A volcanic crater is typically a basin, circular in form, which can be large in radius and sometimes great in depth. In these cases, the lava vent is located at the bottom of the crater.

What is the definition of a volcanic neck?

igneous intrusio. A volcanic neck is the "throat" of a volcano and consists of a pipelike conduit filled with hypabyssal rocks. Did you know about volcanoes? Top 10 Facts About Volcanoes Volcanoes are openings of the Earth's surface. The word volcano comes from the word 'vulcan'. Volcanoes can be active, dormant or extinct. The liquid inside the volcano is called magma. Lava is the liquid that is expelled from the volcano. Lava is very, very hot!

Why do volcanoes erupt?

Volcanoes erupt when molten rock called magma rises to the surface. As the magma rises, bubbles of gas form inside it. Runny magma erupts through openings or vents in the earth's crust before flowing onto its surface as lava. If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises. Why do some volcanoes look different from each other? The gases in magma behave in the same way. To see that different types (shapes) of volcano are created by different types of magma leading to different types of eruption.