The causes of volcanic eruptions are :
- The movement of tectonic plates.
- If and when the plates move away from each other thereby making magma to rise and fill in the gap.
- A reduction in external pressure can act as a trigger for an eruption.
Active volcanoes are volcanoes that often erupt regularly while dormant ones are those that have erupted in historical times but are said to be or inactive.
What causes volcanic eruption?
Volcanic eruption is one that occurs if molten rock known as magma is said to rises to the surface.
Note that this Magma is created when the earth's mantle melts and as such Magma is then said to be lighter than rock so it often rises up and move towards the surface of the Earth.
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