GS1 2024 Q4 10 marks 150 words Physical Geography
UPSC Mains 2024 GS1 Q4 — Physical Geography
What is sea surface temperature rise? How does it affect the formation of tropical cyclones? (Answer in 150 words) 10
Question Decoded — examiner's intent
- Directive verbs
- What isHow does it affect
- Scope keywords
- sea surface temperature riseformation of tropical cyclones
- Implicit sub-parts
- Definition of SST rise in the context of global warming and oceanic heat content.
- The thermodynamics of cyclogenesis (latent heat of condensation and moisture supply).
- Changes in cyclone intensity and frequency specifically due to warming waters.
- Expansion of cyclone-prone areas (e.g., Arabian Sea becoming as active as Bay of Bengal).
- Common pitfalls
- Defining SST rise as just 'hot water' without mentioning the 26.5°C threshold required for cyclogenesis.
- Failing to explain the mechanism of 'latent heat' which is the actual engine of the cyclone.
- Ignoring the geographical shift/trend of cyclones in the North Indian Ocean context.
- Spending too much time on general global warming impacts instead of focusing strictly on the 'formation' process.
- Dimensions required
- Physical OceanographyAtmospheric ThermodynamicsClimatologyGeographical Case Studies (e.g., Cyclone Amphan or Biparjoy)
- Marks allocation hint
Allocate 30 words to define SST rise and its current trend. Devote 80-90 words to the core mechanism (moisture, low pressure, and latent heat). Use the remaining 30 words to highlight the shift in cyclone patterns and frequency in the Indian Ocean to conclude.
Unlock the full analysis for this question
You've seen the question and its examiner-intent decoding. Subscribers also get:
- 🔗 Similar Previous Year Questions — cross-year, cross-paper matches so you study the topic, not the question
- 📚 Source Map — verified citations from Laxmikanth, NCERT, PRS, Yojana, Economic Survey, Spectrum
- 🌱 How this topic is evolving — current-affairs bridge anchored to live TARS news clustering
- 🧭 Examiner's Pattern — how the topic has been framed across every year UPSC has tested it
- ✍️ Answer Skeleton — a structured outline (intro → body → conclusion) you can flesh out
- 🎯 AI evaluation — write your answer, get rubric-based scoring from gs-eval
Or browse 132+ free preview questions across all years and papers — the first 3 questions of every paper are unlocked.
Ready to practice?
Subscribers can attempt this question in 150 words and get an instant, rubric-based evaluation showing where they stand.
Subscribe to evaluate your answer →