2. Do NOW: RB #97 # 1-5 on answer sheet Lab due by Wed: #26- Weathering Sugar Cubes HW due today: place in folder HW due by Wed: Participation Summary MIDTERM Review Packet- due by Wed. 1/5, 5 pt bonus if completed by this Thurs. –MUST BE ON SCAN-TRON!! *** Weathering & Soil QUIZ on Wed *** Tues. 12/21/10 BLUE Day

3. Part 2: Erosion & Deposition AIM: Describe the processes that cause erosion & deposition

4. when weathered rock and soil particles (sediment) are moved from one place to another Grand Canyon

5. a.An agent of erosion b.Sediment being moved c.Driving Force (Gravity) 2. What does an erosional system require?

7. Running Water

8. process by which sediments drop out of the water, wind, or ice carrying it

9. Into large bodies of water

10. When the velocity (speed) of an agent of erosion decreases or stops.

11. As a stream slows down, deposition increases Velocity Rate of deposition

12. Size- The larger the particle, the greater the rate of deposition Rate of Deposition Size of sediment

13. Shape- The rounder the particle, the greater the rate of deposition Rate of Deposition Roundness of sediment

14. Density- The more dense, the greater the rate of deposition (settling rate) Rate of Deposition Density of sediment

15. Do NOW: RB #97 # 6-10 on answer sheet Lab due by Wed: #26- Weathering Sugar Cubes HW due today-place in folder: Participation Summary MIDTERM Review Packet- due by Wed. 1/5, 5 pt bonus if completed by this Thurs. –MUST BE ON SCAN-TRON!! *** Weathering & Soil QUIZ TODAY *** Wed. 12/22/10 BLUE Day

16. Do NOW: RB #98 # 11-17 on answer sheet MIDTERM Review Packet- due by Wed. 1/5, 5 pt bonus if completed by today. –MUST BE ON SCAN-TRON!! Test Corrections! Have an awesome break!!! Thurs. 12/23/10 BLUE Day

17. The more saturated the water is with minerals (e.g., salt), the more minerals will be deposited, or settle out. 9. How does the degree of saturation affect the rate of deposition? Start wed per 3

18. Sediments that are similar in size, shape or density

19. Sediments that are mixed in size, shape or density

20. When the velocity gradually decreases (a stream flows from a steep area to a flatter area) the larger, rounder and more dense sediments settle out first. Horizontal layers form 12. How does a gradual change in speed of wind or water affect how sediment is deposited?

21. Horizontal Sorting

22. When a mixture of sediments settles rapidly, it settles in vertical layers. The largest, roundest and most dense particles settle on the bottom and the smallest, flattest and least dense on top. 13. How does a rapid change in speed of running water affect how sediment is deposited?

23. Vertical Sorting

24. Do NOW: RB #100 # 18-24 on answer sheet Extra Help: Tues/Wed Labs due by Fri: #28: Temp & Chem Weathering #29: Deposition of Sediments HW due by Fri : 1. Vocab packet #2 2. Textbook w/s (attached to vocab) 3. Stream w/s (TBA) 4. Study Guide: # 1-24 MIDTERM Review Packet- due by Wed.–MUST BE ON SCAN-TRON!! ** Gravity & Running Water & Vocab QUIZ on Thurs ** Mon. 1/3/11 GOLD Day

25. Part 3: Gravity & Running Water AIM: Describe how gravity and running water cause erosion & deposition

26. downhill movement of sediments caused by gravity

29. leaning trees

30. 2. How does gravity deposit sediment?

31. running water has great energy of motion it is the most common agent of erosion

32. running water loses energy at bottom of slope  sediments are deposited

33. water flowing through a channel

34. a smaller stream that flows into a larger stream

35. The area of land drained by any one stream or river

36. Solution: dissolved minerals Suspension: carried within the stream Rolling: bouncing along the bottom (stream abrasion)

37. V- shaped valleys

38. Slope The greater the slope the greater the velocity

39. Volume (discharge) The greater the volume of water in a stream the greater the velocity

40. Channel Shape The rounder the stream channel, the greater the velocity due to less friction

41. In the center, just below the surface where there is less friction

42. On the outside of the bend, just below the surface where there is less friction Elbow = Erosion Dent = Deposition

43. The greater the velocity, the larger the sediment a river/stream can carry ESRT pg. 6!

44. New channel Oxbow Lake deposition of sediments Streams deposit SORTED sediment in the slowest sections

45. A thin, flat region on the sides of a stream subject to flooding and deposition Floodplain

46. Delta - large amount of sediments deposited at the mouth of a large river that flows into a lake or ocean river water is no longer flowing downhill; water slows down and deposits sediments Gulf of Mexico Mississippi Delta Bird’s Foot

47. Youthful stream (early stages): steep slopes, high energy, down cutting, erosion is dominant Mature stream: grows larger, more tributaries, begins to meander Old age: slow moving, many meanders, oxbow lakes, wide valleys, deposition is dominant

48. At the source, the stream has the maximum potential energy As it flows toward the mouth, the P.E. is converted to K.E. Kinetic energy is lost to friction. At the mouth, K.E. equals zero 17. How do potential and kinetic energy change from the source of a stream to its final destination (mouth)?

51. Red River

53. Part 4: Wind and Waves AIM: Describe how wind and waves cause erosion & deposition

54. 1a. What type of sediment can be blown by wind? loose sediment the size of sand or smaller

55. Deflation – wind blows away loose sediments lowering the level of the land

56. Sand Blasting – wind blows sand against other rocks, forming small pits, called ‘frosted’

57. Sand Dunes – a large deposit (mound) of wind-blown sand The gentle side faces the direction the wind is coming from

59. 2a. How do waves cause erosion? Breaking waves pound against the shoreline

60. 2b. What is a longshore current? waves arrive at an angle to the shore A longshore current flows parallel to the shore

61. 2c. What type of sediment do waves deposit? Rounded, Sorted sediments (it’s water!)

62. 2d. What are some features of wave deposition? Beach Narrow portion of the shore formed from deposited sediments

63. 2d. What are some features of wave deposition? Sandbar A pile of sand just above water level deposited by waves

64. 2d. What are some features of wave deposition? Barrier Island Long, narrow island parallel to the shore Built by sand deposited by waves and wind Important feature that protects the mainland from storms

67. 4/7/1981 Aerial Photo 2008 Google Earth Image

69. Part 5: Glaciers AIM: Describe how glaciers cause erosion & deposition

70. Snow builds up year after year and compacts Form naturally in areas where more snow falls than melts Continental Ice Sheets In high, mountain valleys Alpine (valley) glaciers

72. Bottom of glacier turns into ice Gravity pulls Alpine glaciers downhill Continental Ice Sheets move from the North towards the South across continents snow keeps adding on when it doesn’t completely melt in the summer

74. 3a. What are some features of glacial erosion? Striations Parallel scratches or grooves glaciers leave on rocks

75. 3a. What are some features of glacial erosion? Kettle Lakes A lake formed when a large block of ice buried in glacial sediments melts, leaving behind an oval depression filled with water

76. Horn –a sharp peak Cirque – bowl- shaped wall of rock Arete – sharp ridge separating two cirques

77. 2b. What shaped valleys do glaciers carve out? U- Shaped valleys

79. ice at the front of a glacier begins to melt, depositing unsorted sediments called till. Creates a variety of depositional features

80. Moraine – ridge of till left behind by a retreating glacier Outwash Plain - sediments deposited by rivers of glacial meltwater in front of a terminal moraine

81. Drumlin – ridge of till left behind by a retreating glacier

82. Glacial Erratic- large rock fragments transported by a glacier and deposited in a new location