QUESTION 4
GS1
10 marks
What is the Fujiwhara effect? Explain its impact on the movement and intensity of tropical cyclones.
WRITE IN
7 min
150 words
What the examiner wants
Define binary cyclone interaction and explain how mutual rotation can alter storm tracks, merger behaviour and intensity.
ExplainMake clear how and why it happens: causes, process, and an example for each point.
Demand-wise check
- 1Two nearby cyclonic vortices orbit a common centre≈35 words
- 2Track outcomes: looping, deflection, mutual rotation and possible merger≈35 words
- 3Intensity outcomes are variable; interaction does not automatically strengthen both systems≈35 words
Open in about 20 words and close in about 20.
Answer plan
DefinitionInteraction geometryMovement effectsIntensity effectsCaveat
Where marks usually go
- Saying the cyclones simply 'collide' without mutual rotation
- Assuming Fujiwhara interaction always produces a stronger cyclone
Value addition
- Two-vortex orbital sketch around a common midpoint
→ Draw it in the body, next to the point it supports.
Verified value additions
These are verified official-source additions selected for this exact PYQ. Use only the point that strengthens your argument.
Next: plan for one minute, write it in 7 minutes, then get it checked.