1. 7 Slope Development
How internal and external forces impact on landscape
External forces that shape the landscape over time

2. Chapter 7: Slope Development
External forces
Shape landscape over time

3. Chapter 7: Slope Development
Earth’s surface
Changes and evolves over time by:
Volcanism
Tectonic uplift
Denudation
Subsidence

4. Chapter 7: Slope Development
Physical processes shape the Earth’s surface
Rivers
Winds
Mass movement
Glaciation

5. Chapter 7: Slope Development
Mechanics of a changing landscape
Weathering
Mechanical
Biological
Chemical

6. 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