Geography - The natural environment
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15 Terms
What is a volcano
It is an opening in the ground where magma forces its way to the surface
What is magma
It is a molten rock that is found beneath the earth’s crust
What is lava
It is magma that reaches the earth’s surface
What is a magma chamber
A collection of magma inside the Earth, below the volcano.
What is the main vent
The main outlet for the magma to escape.
What are secondary vents
Smaller outlets through which magma escapes.
What is a crater
It is created after an eruption blows the top off the volcano.
What are the 3 stages of volcanoes
Active
Dormant
Extinct
What is an active volcano
A volcano that has erupted recently, and there is the possibility
that it may erupt again.
What is a dormant volcano
A volcano that has not erupted for a long time, however, it may
still erupt in the future.
What is an extinct volcano
A volcano that has erupted thousands of years ago, but it will probably never erupt again.
What are the 2 main types of volcanoes
Composite and shield volcano
Features of a composite volcanoe
