Q.Mention the global occurrence of volcanic eruptions in 2021 and their impact on the regional environment.
How to approach: Identify every sub-question in the prompt, allocate dedicated sub-headings to each part, substantiate points with examples/data, and conclude with a forward-looking Way Forward.
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Volcanic eruptions involve the release of lava, ash, and gases from the Earth's interior. In 2021, several major eruptions occurred globally, leaving significant footprints on their regional environments.
Body
Global Occurrences in 2021:
- Hunga Tonga-Hunga Ha'apai: A massive submarine volcanic eruption in December 2021 in the South Pacific.
- Taal Volcano: Located near Manila, Philippines, it experienced active eruptive phases.
- Mount Nyiragongo: A highly destructive eruption in the Democratic Republic of Congo, causing displacement and casualties.
- Fagradalsfjall (Iceland): Erupted in 2021, covering valleys with extensive basaltic lava flows.
- La Palma (Canary Islands): A prolonged, explosive eruption that caused widespread destruction of property and local ecosystems.
Environmental Impacts:
- Geomorphological Changes: Eruptions create new landforms and deposit fresh rock layers on the Earth's surface.
- Climatic Influence: The injection of sulfur dioxide and ash into the stratosphere can reflect solar radiation, causing temporary regional or global cooling.
- Greenhouse Gas Emissions: Over geological timescales, volcanic outgassing of CO2 and water vapor has contributed to global warming trends.
- Widespread Dispersion: Winds transport volcanic ash, dust, and toxic gases across vast distances, affecting air quality and solar radiation levels.
- Seismic Activity: Eruptions are typically accompanied by localized earthquakes and ground deformation.
Conclusion
While volcanic eruptions are inevitable natural events concentrated largely along tectonic boundaries like the Pacific Ring of Fire, robust monitoring and disaster mitigation strategies are essential to minimize their regional impact.
Question Specifications, Marking Rubric & Syllabus Mapping
| Examination & Year | UPSC Civil Services Mains Examination 2021 (Question 4) |
|---|---|
| Paper & Syllabus Topic | General Studies Paper I — Heritage, History, Society & Geography → Physical, Human & Indian Geography |
| Marks, Word Limit & Ideal Time | 10 Marks • 150 Words • Ideal Writing Time: 7–8 Minutes |
| Directive Word & Core Demand | Analytical / Multi-Dimensional: Address all explicit sub-parts of the question with balanced arguments, factual illustrations, and a solution-oriented conclusion. |
| Recommended Structure Split | Intro: ~20–25 Words • Body: ~100 Words (3–4 dimensions) • Conclusion: ~20–25 Words |
| AI Practice & Evaluation Tools | Upload Handwritten Answer for 3-Min Vision AI Evaluation | Generate Custom Answer & Mind Map |
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Frequently Asked Questions — UPSC Mains 2021 GS1 (Geography)
How should I structure the answer for this UPSC Mains 2021 GS Paper I question on Geography?
This 2021 GS Paper I question carries 10 marks with a 150-word limit and uses the "Analytical / Multi-Dimensional" directive. Identify every sub-question in the prompt, allocate dedicated sub-headings to each part, substantiate points with examples/data, and conclude with a forward-looking Way Forward. Follow the ideal word split (Intro: ~20–25 Words • Body: ~100 Words (3–4 dimensions) • Conclusion: ~20–25 Words) and aim to finish within 7–8 Minutes.
Which UPSC Mains syllabus topic does this 2021 question belong to?
This question is part of General Studies Paper I — Heritage, History, Society & Geography under the syllabus module "Physical, Human & Indian Geography". You can explore all repeated questions from Geography in Acme AI's 3D PYQ Realm or filter all Geography PYQs on the Mains PYQ Directory.
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