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Weathering, Soil, and Erosion Ch. 7 & 8 Review Questions.

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Presentation on theme: "Weathering, Soil, and Erosion Ch. 7 & 8 Review Questions."— Presentation transcript:

1 Weathering, Soil, and Erosion Ch. 7 & 8 Review Questions

2 The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is:  A. erosion  B. cracking and peeling  C. abrasion  D ice wedging

3 What kind of weathering causes the mineral composition of rocks to change?  A. mechanical  B. permeable  C. chemical  D. general

4 A hot and wet climate causes weathering to take place  A. slowly  B. at the same rate as when the limate is dry and cool  C. unevenly  D. rapid

5 Soil formation begins with the weathering of  A. litter  B. rock  C. the A horizon  D. humus

6 The mixture of rock particles, minerals, decayed organic material, air, and water is called:  A. gravel  B. litter  C. silt  D. soil

7 The decayed organic material in soil is called:  A. silt  B. litter  C. humus  D. clay

8 Which soil particle is the largest?  A. gravel  B. sand  C. silt  D. clay

9 Which soil particle is the smallest?  A. sand  B. gravel  C. clay  D. silt

10 The layer of soil in which topsoil is found is the  A. A horizon  B. B horizon  C. C horizon  D. bedrock

11 Most of the work of mixing humus within the soil is done by:  A. fungi  B. ants  C. earthworms  D. bacteria

12 The solid layer of rock beneath the soil is called:  A. bedrock  B. gravel  C. the B horizon  D. subsoil

13 The process by which natural forces move weathered rock and soil from one place to another is called  A. soil conservation  B. deposition  C. abrasion  D. erosion

14 The process in which sediment is laid down in a new location is called:  A. weathering  B. deposition  C. erosion  D. mass movement

15 Landslides, mudflows, slump, and creep are all examples of  A. mechanical weathering  B. runoff  C. mass movement  D. soil formation

16 Mass movement is caused by  A. plucking and abrasion  B. gravity  C. chemical weathering  D. erosion and deposition


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