• How internal and external forces impact on landscape

• External forces that shape the landscape over time

7 Slope Development

Chapter 7: Slope Development

External forces Shape landscape over time

Earth’s surface

Changes and evolves over time by:

Volcanism Tectonic uplift Denudation Subsidence

Chapter 7: Slope Development

Physical processes shape the Earth’s surface

Rivers

Winds

Mass movement

Glaciation

Chapter 7: Slope Development

Mechanics of a changing landscape

Weathering Mechanical Biological Chemical

Chapter 7: Slope Development

Chapter 7: Slope Development

The cycle of landscape change

Three stages:

Youthful = high relief, rugged

Mature = rounded landscape

Old = landscape is almost flat and it’s the

lowest level of land surface, i.e. it’s base level