how are volcanoes classified on the basis of their eruption
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On the basis of periodicity of eruption, volcanoes are classified into three types:
(i) active volcanoes,
(ii) dormant volcanoes, and
(iii) extinct volcanoes.
(i) active volcanoes,
(ii) dormant volcanoes, and
(iii) extinct volcanoes.
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There is a wide variation in the mode of volcanic eruptions and their periodicity. Accordingly, the volcanoes can be classified into three types. These are :
1. Active Volcanoes erupt frequently and constantly eject volcanic lava, gases, ashes and fragmental materials.
E.g. Etna and Stromboli
2. Dormant volcanoes have become quiet after eruption. They do not show any indication of future eruption. These are also called sleeping volcanoes.
E.g. Mt Vesuvius and Mt Fujiyama
3. Extinct volcanoes have not erupted for thousands of years.
E.g. Mount Kilimanjaro
1. Active Volcanoes erupt frequently and constantly eject volcanic lava, gases, ashes and fragmental materials.
E.g. Etna and Stromboli
2. Dormant volcanoes have become quiet after eruption. They do not show any indication of future eruption. These are also called sleeping volcanoes.
E.g. Mt Vesuvius and Mt Fujiyama
3. Extinct volcanoes have not erupted for thousands of years.
E.g. Mount Kilimanjaro
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