The document discusses the processes of weathering and erosion. It defines weathering as the chemical and physical breakdown of rocks due to water, air, organisms and humans. There are two types of weathering: physical and chemical. Physical weathering breaks rocks into smaller pieces without changing their chemical composition, while chemical weathering alters the chemical makeup of rocks. The byproducts of weathering are sediment and soil. Erosion is then defined as the transport and deposition of these sediments elsewhere by forces like water, wind, and glaciers.

1. statue Grand Canyon Sand Pile What do These 3 Things Have in Common??

2. They have all been subjected to the process of WEATHERING

3. weathering

5. For weathering to occur the rocks must be exposed to: WATER (hydrosphere) AIR (atmosphere) ACTION OF HUMANS & OTHER LIVING ORGANISMS

6. Evidence of Weathering: the end product of the weathering of rock is SEDIMENT

8. Explain how water and wind can can cause physical weathering in the following ways:

9. The alternate freezing and thawing of water

10. WATER EXPANDS WHEN IT FREEZES This is called…….

11. Ice Wedging or Frost Action

12. a weathered sidewalk

13. Half Dome in Yosemite California

14. *ABRASION

17. RUNNING WATER AND WIND CAN CAUSE ROCKS TO RUB AGAINST EACH OTHER AND WEAR THEM DOWN

18. * BIOLOGIC ACTIVITY

19. A sidewalk being lifted by the tree roots!!

21. PLANT ROOTS EXPOSES NEW SURFACES TO WEATHERING

22. *Humans can influence the rate of weathering by the use of powerful equipment

23. If you increase the surface area you will ___________ the rate of weathering increase

24. Surface area rate of weathering

27. This was washed up on a beach!!

28. A rusty gate……

30. EX. LIMESTONE CAVES

38. IN GENERAL WHEN THERE IS MORE THERE IS MORE WEATHERING MOISTURE

39. CLEOPATRA’S NEEDLE Central Park

40. RATE OF WEATHERING ALSO DEPENDS ON: MINERAL COMPOSITION ROCK RESISTANCE (HARDNESS)

42. SHALE SANDSTONE SHALE SANDSTONE LIMESTONE SHALE DOLOSTONE WHICH ROCK IS THE MOST RESISTANT TO WEATHERING? WATER

43. SHALE SANDSTONE SHALE SANDSTONE LIMESTONE SHALE DOLOSTONE WHICH ROCK IS THE MOST RESISTANT TO WEATHERING?

44. SHALE SANDSTONE SHALE SANDSTONE LIMESTONE SHALE WHICH ROCK IS THE LEAST RESISTANT TO WEATHERING? DOLOSTONE

45. SHALE SANDSTONE SHALE SANDSTONE LIMESTONE SHALE WHICH ROCK IS THE LEAST RESISTANT TO WEATHERING? DOLOSTONE

46. SOIL FORMATION: SOIL IS THE COMBINATION OF: ROCK PARTICLES MINERALS ORGANIC MATTER

47. THE END RESULT OF WEATHERING AND BIOLOGIC ACTIVITY IS: soil

48. Adding to a compost pile

51. EROSION

53. AND DEPOSITING THEM ELSEWHERE

55. EROSION IS DRIVEN BY THE FORCE OF GRAVITY

57. Each Agent of Erosion Produces it’s Own Characteristic shape and Texture in the Sediment :

59. ROUNDS AND SMOOTHES THE ROCK SURFACE ALSO MAKES IT SMALLER

60. WIND BLOWN SEDIMENTS FROST AND PIT THE ROCK SURFACE

61. SMALL SEDIMENTS IN THE GLACIER POLISHES & SMOOTHES THE ROCK SURFACE LARGE SEDIMENTS SCRATCH AND STRIATE THE ROCK SURFACE

62. FALLEN ROCKS ARE SHARP & ANGULAR

63. RUNNING WATER The primary agent of erosion is:

64. Colorado River

65. Grand Canyon

66. Niagra Falls