1. Weathering and soil Earth’s external processes - weathering Mechanical
frost wedging
unloading
thermal expansion
Chemical
dissolution
oxidation
hydrolysis
Biological
Weathering and soil

2. Mechanical weathering – frost wedging
Weathering and soil

3. Mechanical weathering – frost wedging
Weathering and soil

4. Mechanical weathering – talus slopes
Weathering and soil

5. Mechanical weathering – unloading (sheeting)
Weathering and soil

6. Mechanical weathering – unloading (exfoliation domes)
Weathering and soil

7. Mechanical weathering – unloading (exfoliation domes)
Weathering and soil

8. Mechanical weathering – thermal expansion
Weathering and soil

9. Chemical weathering – dissolution
Weathering and soil

10. Chemical weathering – dissolution
Weathering and soil

11. Chemical weathering – oxidation
Weathering and soil

12. Chemical weathering – acid mine drainage
Weathering and soil

13. Chemical weathering – spheroidal weathering
Weathering and soil

14. Rates of weathering – differential weathering
Weathering and soil

15. Soil - regolith
Weathering and soil

16. Soil - humus
Weathering and soil

17. Soil – formation and composition
Weathering and soil

18. Soil – formation and composition
Weathering and soil

19. Soil – parent material
Weathering and soil

20. Soil – parent material (residual soil)
Weathering and soil

21. Soil – soil profile

22. Soil – eluviation and leaching
Weathering and soil

23. Soil – eluviation and leaching
Weathering and soil

24. Soil – eluviation and leaching
Weathering and soil

25. Soil – soil taxonomy
Weathering and soil