What are the three stages of a volcano?
An active eruption is one that has had at least one eruption throughout the previous 10,000 years. A volcano that is active could be erupting or dormant. Kilauea in Hawaii is an example of an active volcano
A dormant volcano is one that has not erupted for a very long time but has the potential to erupt. An example of this type of volcano is Mt. Rainier in the United States.
An extinct volcano is one that has not erupted for 10,000 years and is not believed to erupt again. Mt. Wai'ale'ale is an extinct mountain on Kauai and is considered the wettest spot on earth and also owns the biggest crater in the U.S.A.