Topic: Salient features of world’s physical geography.
2. The internal structure of the Earth, as understood through seismology, is divided into several layers, each characterized by distinct physical and chemical properties. Explain. (250 words)
Difficulty level: Easy
Reference: Insights on India
Why the question:
The question is part of the static syllabus of General studies paper – 1.
Key Demand of the question:
To write about how we can understand the interior of earth by using Seismic waves.
Directive word:
Explain – Clarify the topic by giving a detailed account as to how and why it occurred, or what is the context. You must be defining key terms wherever appropriate and substantiate with relevant associated facts.
Structure of the answer:
Introduction:
Begin by mentioning that the structure of Earth’s deep interior cannot be studied directly but geologists use seismic (earthquake) waves to understand the interior structure of earth.
Body:
First, define what are seismic waves and their types.
Explain, how the difference in their properties helps us to understand the earth’s interior. Also, draw a neat labelled diagram for better presentation of your answer.
Conclusion:
Mention the significance of understanding the interior of the earth.
