What are Northern and Southern lights? Explain the phenomenon and discuss their associated impacts on Earth's atmosphere and human activities.
Introduction
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Main Body
Phenomenon: Northern & southern lights are formed due to interaction of diffused sunlight (catawinding slanting angle) to ions in the ionosphere of uppers latitude. Pure to Aurora Australis Aurora Borealis. Sometimes it also forms in lower latitude when solar wind is powerful enough to fowel along another magnetic field.
Impacts on earth's atmosphere and human activities:
↑ Increase daytime in higher latitude
Used by migratory birds in their movement
Tribes like Inuit serve northern light as blessing of gods
If aurora are strong then they thin out atmosphere
Hence, Northern light & Southern light are unique phenomena impacting atmosphere along with cultural life in people.
— Ankit Rauchan · AIR 255
Conclusion
17 words
- Correct identification of phenomenon
- Mentions Aurora Australis and Aurora Borealis
- Explains role of solar wind and magnetic field
Ankit Rauchan
Salient features of World's Physical Geography
Geophysical Phenomena
Aurora and Atmospheric Phenomena
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Total words
3
Paragraphs
explanatory
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