science 5th

1. Lithosphere and erosion

2. Lithosphere: Why is it important?

3. Lithosphere
• Earth changes
– Internal geological processes earthquakes
volcanic eruptions
– External geological processes
Earth´s Surface

4. Internal or external geological
process?

5. Internal or external geological
process?

6. Internal or external geological
process?

7. Internal or external geological
process?

8. Internal or external geological
process?

9. Internal or external geological
process?

10. Internal or external geological
process?

11. Internal or external geological
process?

12. Internal or external geological
process?

13. Internal or external geological
process?

14. Erosion
Changes on Earth
External
Erosion: water
Erosion: wind
Internal
Earthquakes,
volcanic
eruptions, etc
Erosion: Human
activity
Fluvial
Pluvial
Arthropic
Glacial

15. Type of erosion

16. Anthropic Erosion

17. Anthropic Erosion
• Inadequate agricultural practices
-planting crops on hills or inclined land where
minerals can be washed away

18. Anthropic Erosion
• Inadequate agricultural practices
-too many animals in the same grazing field

19. Anthropic Erosion
• Eliminating vegetation on forest floors:
mechanically, chemically or by using fire.

20. Anthropic Erosion
• Recurrent Forest fires

21. Consecuences
• Desertification
• Overexploitation loss of nutrients

22. Consecuences
• Extraction of mineral resources
• Overexploitation impermeable floors floods

23. VIDEO

24. What type of erosion is it?

25. What type of erosion is it?

26. What type of erosion is it?

27. What type of erosion is it?

28. What type of erosion is it?

29. What type of erosion is it?

30. What type of erosion is it?

31. What type of erosion is it?