2. Erosion and Deposition

3. Erosion - Movement of weathered materials from one location to another.

6. Agents of Erosion Gravity Water Wind Glacial Activity Plants, Animals, & Humans

8. Deposition - Final stage of the erosional process in which the movement of transported materials slows and they are dropped in another location

9. Deposition - Occurs when sediments are laid down on the ground or sink to the bottom of a body of water.

10. Evidence of Erosion

11. Evidences that sediments were transported by...

12. Running Water - leaves smooth rounded sediments

14. Wind - leaves rounded and frosted sediments

16. Glaciers - unsorted scratched and polished sediments

18. Gravity - leaves sharp and angular sediments

20. The underlying cause or source of power for most erosion is GRAVITY

21. Water Velocity & Water as an Erosive Agent

22. The predominant agent or erosion is RUNNING WATER

23. Discharge - measure of the amount of water that passes a particular point in a given amount of time

24. Velocity of a stream depends on Gradient and Discharge

25. Wind Erosion

26. Wind Erosion is predominant in VERY DRY areas.

28. White Rock in Egypt

29. Why? Lack of vegetation Lack of Moisture Both of which hold soil or sediments together

30. Glaciers

31. Glacier Types

32. Valley Glaciers in mountain areas

33. Continental Glaciers cover entire continents

34. Glaciers can carry the LARGEST sediments (boulders etc.)

35. Glacial deposits are UNSORTED left in deposits called TILL or MORAINE

36. TILL

37. Moraine

38. The effects of erosion by the activities of plants, animals, & humans are MINIMAL in comparison to the erosional effects of water, wind, and glaciers.

39. THE END