Why do earthquakes occur before a volcano erupts?
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Earthquakes occur before a volcano erupts because these events are usually related to the movement of magma beneath the surface of the earth. Earthquakes are caused by shifts in the Earth’s crust due to the rapid release of energy, while volcanoes form through the movement of molten rock and gas which builds up pressure until it erupts.
Earthquakes can occur as a result of the buildup of magma and gas and the resulting changes in pressure that can be released through an eruption.