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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)

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)

GC Leong – Ch4

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.

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

  • Explain that orogenesis builds new mountains, folding and faulting causes uplift or depression in certain areas and volcanic disruptions also modify the surface
  • Thereafter 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 forces.