Topic: Important Geophysical phenomena such as earthquakes, Tsunami, Volcanic activity, cyclone etc., geographical features and their location- changes in critical geographical features (including waterbodies and ice-caps) and in flora and fauna and the effects of such changes.
2) Examine the constructive and destructive effects of volcanic eruptions with suitable examples. (250 words)
Why this question:
The question is straightforward –
Demand of the question:
Discuss – Constructive effects of volcanic eruptions – Formation of Fertile Soils- Volcanic soils, Creation of new land, Provides useful materials, Geothermal energy, Volcano Tourism etc. Destructive effects of the volcanoes include – mudflow or debris flow that contains magma, Nuée ardentes, Environmental damage etc.
Examine – When asked to ‘Examine’, we have to look into the topic (content words) in detail, inspect it, investigate it and establish the key facts and issues related to the topic in question. While doing so we should explain why these facts and issues are important and their implications.
Structure of the answer:
The question is straightforward and conceptual , thus there is not much to discuss, one can start by defining what are volcanoes.
Explain in detail what you understand by volcanism. And discuss the both constructive and destructive effects of volcanic eruptions with suitable examples like volcanic soils – In India, such soil type is referred as Laterite soil, which is mainly concentrated in the eastern and western ghats, new island formed in the South Pacific due to Hunga Tonga volcano eruptions etc.
Conclude with consequences of such changes in earth building activities.