RC

Ritika ChitlangiaAIR 55

Question Q6Explain and discussGS1GS1

What are Northern and Southern lights? Explain the phenomenon and discuss their associated impacts on Earth's atmosphere and human activities.

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AnswerStrengthsGapsKeywords

Introduction

Aurora Borealis and Aurora Australis are called as the Northern and Southern lights respectively, visible over the 66½° NLS line.

20 words

Main Body

Phenomena

1The space weather is influenced by coronal mass ejections and geo-magnetic storms.
2The earth's magnetosphere (part of the ionosphere) consists of several charged particles, called as the van Allen belts.
3When the CME particles interact with earth's magnetosphere, the molecular N₂ and O₂ particles get excited forming [illegible]

daring lights called as the Northern and Southern lights.

Impact

(A) Atmosphere

1Ionization of van Allen belts → cornus close to Earth.
2Ionization of the charged particles → illumination of the NoCH lights.
3Generation of heat in thermosphere.

(B) Human activities

1Harm to satellite, navigation, aeronautics, flights etc.
2Major source of tourism for the scandinavian countries.
IET: Islands (+7) of UDPAurora towers.

Thus, these natural sights are geo-atmospheric marvel, with both costs and benefits to society

135 words2 paragraphs

Conclusion

Thus, these natural sights are geo-atmospheric marvel, with both costs and benefits to society

14 words

Diagram

A circular diagram showing the Sun on the left with arrow pointing to Earth on the right, illustrating the solar wind and auroral lights interaction at the magnetic poles.

  • Accurate definition of aurora phenomena
  • Correct reference to 66½° latitude
  • Identifies coronal mass ejections and geo-magnetic storms
  • Mentions magnetosphere and van Allen belts correctly
  • Includes relevant diagram
  • Scientific approach with molecular explanations

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Page 13

Topper

Ritika Chitlangia

AIR 55

Subject & Paper

GS1GS1

Topic

World Physical Geography

Geophysical Phenomena

Aurora - Northern and Southern Lights

Writing Stats

169

Total words

2

Paragraphs

scientific, technical

Tone