1.

Explain the types of volcanoes on the basis of the periodicity of eruption with examples.

Answer»

According to the periodicity of the volcanic eruptions, three types of volcanoes can be identified. 

(i) Active Volcanoes –

  • If the volcanic eruptions are regular even in the present times, then such volcanoes are called active volcanoes. 
  • E.g., Mt Fujiyama in Japan and Mt. Stromboli in the Mediterranean Sea.

(ii) Dormant Volcanoes –

  • When a volcano has not erupted since long, but may become active suddenly is called a dormant volcano. 
  • E.g., Mt. Vesuvius in Italy, Mt. Katmai in Alaska and Barren Island, India.

(iii) Extinct volcanoes –

  • Those volcanoes which have not erupted in the past since long and are not likely to erupt in the future are called extinct volcanoes. 
  • E.g., Mr. Kilimanjaro in Tanzania.


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