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Why are only some volcanoes active?

Why are only some volcanoes active?D34Types of Volcanoes video

2 Places volcanoes are active

Plate BoundariesJapan IslandsMade up of volcanoes located at convergent plate boundaries

Hot SpotsHawaiian IslandsFormed from hot spotsKauai is the oldest island, moved from hot spot and then it was no longer active and other islands formed as the plate moved over the hot spot

Dormant VolcanoesHas erupted in history and been recorded, but has not erupted in a long time.

Extinct Volcano No recorded history of eruption


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