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While the earth’s crust is undergoing constructive changes to create new relief, external forces of nature are working vigorously to level this down. Explain.

Topic: Salient features of world’s physical geography.

2. While the earth’s crust is undergoing constructive changes to create new relief, external forces of nature are working vigorously to level this down. Explain. (250 words)

Difficulty level: Moderate

Reference: Certificate Physical & Human Geography by Goh Cheng Leong.

Why the question:

The question is part of the static syllabus of General studies paper – 1 and mentioned as part of Mission-2022 Secure timetable.

Key Demand of the question:

The question expects us to explain that the earth’s crust is a result of the constructive changes as a result of orogenesis and the external forces that are aggressively working to wear away the surface. Explain what these forces are and how they impact the formation of earth’s crust

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: 

Highlight that earth’s crust is a result of the constructive changes as a result of orogenesis and the external forces that are aggressively working to wear away the surface.

Body:

First, explain that orogenesis builds new mountains, folding and faulting causes uplift or depression in certain areas and volcanic disruptions also modify the surface

Next, explain the various external forces that working against such forces such as weathering, erosion, transportation and depositing. Explain how they impact the relief features seen on earth’s crust.

Conclusion:

Explain what is the impact of such force.