1. Weathering & Erosion Unit Review

2. Question #1 What is the change in physcial form or chemical composition of rock materials on the Earth’s surface?

3. Answer: Weathering

4. Question #2: What is the type of weathering when rocks are physically broken down?

5. Answer: Mechanical

6. Question #3: What is the type of weathering when rocks change their chemical composition?

7. Answer: Chemical

8. Question #4: What is it called when water seeps into cracks, freezes, and expands, breaking the rock around it?

9. Answer: Ice wedging

10. Question #5: What is the type of weathering when plant roots work to break up rock?

11. Answer: organic

12. Question #6: What is it called when rocks rub against each other and wear down?

13. Answer: abrasion

14. Question #7: What is the chemical reaction called that breaks down rocks with water?

15. Answer: Hydrolysis

16. Question #8: Which type of rock weathers the fastest?

17. Answer: Sedimentary rock

18. Question #9: Which type of sedimentary rock weathers the fastest?

19. Answer: Limestone

20. Question #10: Which type of rock does not weather easily?

21. Answer: Quartzite

22. Question #11: Which will weather faster: a large rock or the large rock broken into pieces?

23. Answer: The large rock broken into pieces

24. Question #12: What are the four factors that affect the rate of weathering?

25. Answer: Composition, exposure, climate, topography

26. Question #13: In what type of climates does weathering occur slowly?

27. Answer: Hot and dry OR cold and dry

28. Question #14: What is the process by which the products of weathering are transported?

29. Answer: erosion

30. Question #15: The main difference between erosion and weathering is that erosion involves what?

31. Answer: transportation

32. Question #16: What is the NAME of the top layer of soil?

33. Answer: Humus

34. Question #17 Which layer of soil has all the organic activity?

35. Answer: humus

36. Question #18: What is the NAME of the second layer of soil from the top?

37. Answer: regolith

38. Question #19: Which layer of soil has minerals that were leached down?

39. Answer: regolith

40. Question #20: What is the name of the third layer of soil from the top?

41. Answer: Partially weathered bedrock

42. Question #21: What is the name of the bottom layer of soil?

43. Answer: bedrock

44. Question #22: What is the smallest soil particle called?

45. Answer: clay

46. Question #23: What is the middle sized soil particle called?

47. Answer: silt

48. Question #24: What is the largest soil particle called?

49. Answer: sand

50. Question #25 What is a cross section in which layers of the soil and the bedrock beneath the soil can be seen?

51. Answer: A soil profile

52. Question #26: What is a layer of soil called?

53. Answer: Soil horizon

54. Question #27: What is the process in which water carried dissolved minerals to lower layers of rock?

55. Answer: leaching

56. Question #28: In what type of climate does chemical weathering occur the fastest?

57. Answer: Hot, wet

58. Question #29: What kind of land is best for crops?

59. Answer: Flat with drainage

60. Question #30: What is it called when farmers make cuts in the land that eventually get big enough for erosion?

61. Answer: gullying

62. Question #31: What is it called when farmers plow up and down slopes to allow water to run off the slopes?

63. Answer: furrowing

64. Question #31: What is it called when farmers use methods to slow erosion?

65. Answer: Soil conservation

66. Question #32: What is a method farmers use for soil conservation??

67. Answer: Crop rotation

68. Question #33: What are the four agents of erosion?

69. Answer: Wind, water, glaciers, gravity

70. Question #34: What is the movement of fragments down a slope called?

71. Answer: Mass movement

72. Question #35: What is a rapid mass movement called?

73. Answer: Landslide, mud flow, avalanche

74. Question #36: What is a slow mass movement called?

75. Answer: creep

76. Question #37: What are steep landforms with high elevation called?

77. Answer: mountains

78. Question #38: If mountains have low, rounded tops, are they probably young or old??

79. Answer: old

80. Question #39: What are gently sloped or flat surfaces at or below sea level called??

81. Answer: plains

82. Question #40: What are high- elevation flat surfaces above sea level called?

83. Answer: plateaus

84. Question #41: How would you classify the soil if the pH is less than 7?

85. Answer: acidic

86. Question #42: What is the term that describes how much water the soil can hold?

87. Answer: porosity

88. Question #43: Which term describes how well water can flow through soil?

89. Answer: permeability

90. Question #44: What is the process by which the products of weathering are transported called?

91. Answer: erosion

92. Question #45: What are the spaces in between the soil particles called?

93. Answer: Pore spaces

94. Have fun studying!!