2. Erosion and Deposition

3. Do Now 1.What are the four main agents of physical weathering? 2.Give two examples of chemical weathering. 3.What factors influence how sediments sort? 4.What influences the rate of erosion/deposition in a stream? 5.What is a dynamic equilibrium?

4. Do Now 1. What is physical weathering? 2. What is chemical weathering? 3. What are the four main types of physical weathering? 4. What are the two main types of chemical weathering? 5. How does a cavern form? 6. How does a sink hole form? 7. Why does Florida have more sinkholes than NYS? (both have limestone bedrock) 8. What factors influence stream velocity? 9. What factors does stream velocity influence? 10. Why do sediments settle in a body of water? 11. How do sediments sort? 12. How do streams transport sediment?

5. Erosional Agents Running Water - Rivers, Streams Gravity - Mass Movements Glaciers Wind Waves and Ocean Currents Humans

6. Running Water Stream Velocity and Erosion Factors Effecting Stream Velocity –Gradient (Slope) of streambed –Volume of water in a stream (Stream Discharge) –Change in the width of the streambed

10. Methods of Sediment Transport Rolling, sliding, bouncing Suspension Solution

11. Suspension

12. Which was eroded by a stream?

13. Cobble from a Streambed

14. Stream Deposition Cause of deposition Sediment characteristics effecting deposition –size –shape –density

15. Sediments are deposited when a streams velocity decreases. This occurs when a stream enters a body of water. The velocity decreases and the sediments are deposited.

16. Size: Largest Particles Settle First Shape: Roundest Particle Settle First Density: The most dense particle settle first.

17. Side View of Streambed V Shaped Streambed Flood Plain

18. The Mississippi River Flood Plain

19. Vertical Sorting Small Large

22. Horizontal Sorting Stream Flow Flow Widens Slower Water Large, Round, Dense Sediment Small, Flat, Lighter Sediment Delta

23. The Yukon River Delta

24. Do Now 1.What factors effect a stream’s velocity? 2.How does a stream’s velocity effect erosion? 3.What causes stream eroded sediments to deposit? 4.What erosional features are created by stream erosion? 5.What is the appearance of stream eroded sediments? 6.What are the depositional features created by stream erosion?

28. Side View (Cross Section) of a Meander Inside Slower Water More Deposition Outside Faster Water More Erosion Gravity Pulls Sediment Down

34. Meander ErosionDeposition

35. Inside of a Meander = Deposition

36. Eventually causing Oxbow lakes to form

37. Review Stream Erosion Deposition

38. Watershed on Mars?

39. Watershed Tributaries

49. http://www.youtube.co m/watch?v=SlGTirtRP 4c

50. Running Water, Gravity