it is collecting up magma for the next eruption
This is called the magma chamber.
They term this an extinct volcano if there is no longer a supply of magma to the chamber underlying the volcano or dormant if there is (as there is therefore still a chance of a future eruption).
the volcano becomes extinct
It comes from the Magma Chamber in the bottom of the volcano. :)
They may infer that the volcano has become more active - an increase in seismicity (an increase in the number of earthquakes) may be caused by the movement of magma into a high level magma chamber near the earth's surface, causing an increase in the magma pressure which can cause fracturing of the surrounding rock mass. This may be a warning sign of an impending volcanic eruption.
it's different because a dormant volcano is when a volcano is sleeping but can erupt any time. an extinct volcano is a volcano that's dead. it is very unlikely for an extinct volcano to awaken. the volcano is dead because it has let out all the magma from its chamber or the magma has drifted someplace else or the magma has hardened.
In a magma chamber
This is called the magma chamber.
They term this an extinct volcano if there is no longer a supply of magma to the chamber underlying the volcano or dormant if there is (as there is therefore still a chance of a future eruption).
A volcano magma chamber is a large underground reservoir that holds molten rock (magma). It is a key component of a volcano's plumbing system and acts as a storage unit for magma before it is eventually erupted to the surface. The magma chamber is typically located beneath the volcano and can vary in size and shape.
a magma chamber
the volcano becomes extinct
It comes from the Magma Chamber in the bottom of the volcano. :)
Gas is stored in the Magma chamber at the bottom of the volcano, along with the magma.
A volcano is a vent or hole in the ground where molten rock and associated gasses erupt. A magma chamber is a chamber underground, often under a volcano, where molten rock is stored.
When lava is underground it is called magma. Magma is generally stored in a magma chamber dome distance beneath the volcano. Periodically, fresh magma may be injected into the magma chamber from the mantle.
They may infer that the volcano has become more active - an increase in seismicity (an increase in the number of earthquakes) may be caused by the movement of magma into a high level magma chamber near the earth's surface, causing an increase in the magma pressure which can cause fracturing of the surrounding rock mass. This may be a warning sign of an impending volcanic eruption.