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Weathering, Soil, and Erosion Ch. 7 & 8 Review Questions
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
What kind of weathering causes the mineral composition of rocks to change? A. mechanical B. permeable C. chemical D. general
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
Soil formation begins with the weathering of A. litter B. rock C. the A horizon D. humus
The mixture of rock particles, minerals, decayed organic material, air, and water is called: A. gravel B. litter C. silt D. soil
The decayed organic material in soil is called: A. silt B. litter C. humus D. clay
Which soil particle is the largest? A. gravel B. sand C. silt D. clay
Which soil particle is the smallest? A. sand B. gravel C. clay D. silt
The layer of soil in which topsoil is found is the A. A horizon B. B horizon C. C horizon D. bedrock
Most of the work of mixing humus within the soil is done by: A. fungi B. ants C. earthworms D. bacteria
The solid layer of rock beneath the soil is called: A. bedrock B. gravel C. the B horizon D. subsoil
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
The process in which sediment is laid down in a new location is called: A. weathering B. deposition C. erosion D. mass movement
Landslides, mudflows, slump, and creep are all examples of A. mechanical weathering B. runoff C. mass movement D. soil formation
Mass movement is caused by A. plucking and abrasion B. gravity C. chemical weathering D. erosion and deposition
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