What is Northern and Southern lights? Explain the phenomenon and discuss their associated impacts. (10 marks, 150 words)
Introduction
Northerns [Northerns] & Southern lights [auroras] are created due to interaction between earth's magnetic field and solar wind, near the poles.
21 words
Main Body
Nortlles & Realtliers [Northern and Southern lights] are created due to interactions between earth's magnetic field and solar wind, near the poles—
(diagram showing aurora formation with solar winds, magnetic field, and polar region)
Earth's magnetic field directs away the solar-coronal ejection, by repulsion.
But near the poles, solar flares can seep in the atmosphere - this creates green-spire called aurora.
Diagram
Diagram showing aurora formation with solar winds, magnetic field directions, and polar region labeled with Earth at center
- Identifies correct fundamental mechanism (interaction of solar wind and magnetic field)
- Recognizes polar location as crucial factor
- Provides visual diagram for clarity
- Distinguishes between repulsion and penetration at poles
Poorva Agrawal
Salient features of World's Physical Geography
Important Geophysical Phenomena
Aurora phenomenon (Northern and Southern lights)
82
Total words
3
Paragraphs
explanatory, scientific
Tone