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Geography Optional 300+ Score Pack · Model answer

Discuss the forces which govern the air movement on the Earth’s surface.

  • UPSC 2017
  • Climatology

Wind obeys Newton's second law: its acceleration is the resultant of the forces acting on the air, so real wind is never a simple push from high to low pressure.

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • 1. Pressure Gradient Force — the Driving Force
  • 2. Coriolis Force — the Deflecting Force
  • 3. Frictional Force — the Retarding Force
  • 4. Centripetal Force — the Curvature Requirement
  • Resultant Winds
  • Geostrophic wind
  • …and 4 more sections, with a conclusion

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