Which of the following factors does NOT control the stability of a slope?
A. whether the slope is rock or soil
B. the orientation of fractures, cleavage, and bedding
C. the amount of water in the soil
D. the angle of repose for intact bedrock
Answer: D
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Condensation is more likely to occur when air ____
A) warms and the speed of the water vapor molecules decreases B) cools and the speed of the water vapor molecules decreases C) cools and the speed of the water vapor molecules increases D) warms and the speed of the water vapor molecules increases
What strategy has been suggested to stabilize the La Conchita, California, landslide?
A) retaining wall construction B) water drainage C) planting of vegetation D) slope grading
The economics of solar electricity are
A) bleak because there is a large gap between the price of energy from coal and from PV cells. B) excellent for CSP technology but discouraging for PV cells. C) growing at a phenomenal rate as the current $60 billion industry is expected to double by 2020. D) less promising because the costs of ecosystem damage and pollution are not counted.
Walking along the woods, a student spot a lizard that quickly runs under some leaves that are resting on the forest floor. Looking under the leaves to find the lizard, he notices that the soil is very moist despite several days without rain
This moist soil layer under the leaves is a result of A) humus with a high water-holding capacity and reduced evaporative loss in the O horizon. B) sand with a high water-holding capacity with water supplied from the B and E horizon. C) low infiltration and high evaporative loss in the B horizon. D) a low water-holding capacity of the lower soil layers and high evaporation through the top soil layers.