Generally,volcano classified based on their volcanic activity level.
Active volcano is generally defined as a volcano that has erupted at
least once in the past 10,000 years.So an active volcano could be
erupting right now or might have erupted only once since the last Ice
Age.If a volcano is not active, it could be a dormant volcano, which
means that it is a volcano that has not erupted in the past 10,000
years, but has the potential to erupt in the future.
