ABCP Basic Sciences / Basic soil science EXAM QUESTIONS WITH VERIFIED 100% SOLUTIONS A+

ABCP Basic Sciences / Basic soil science EXAM QUESTIONS WITH VERIFIED 100% SOLUTIONS Which of the following is not true with respect to the global hydrologic cycle? a. Fresh liquid water is not evenly distributed globally. b. More than 97% of the global water is contained in the oceans. c. The "water war" among AL, FL and GA is due to disagreement how to share their common water. - ANSWER all of these are true true or false: Watershed is the area of land where all of the water under it or drain off of it goes into the same place. - ANSWER true The largest liquid freshwater is contained in ____________ globally. - ANSWER groundwater The approximate residence time for a water molecule in the cloud is... - ANSWER 10 days In the water balance equation, if precipitation, evapotranspiration and water discharged in a given watershed are 1250, 700 and 150 cm, respectively, the amount of water stored in the soil will be - ANSWER 400 cm If precipitation in a given watershed is much higher than the potential evapotranspiration, you will have... - ANSWER discharge The likelihood of polluting groundwater with pesticides and plant nutrients is enhanced by the presence of - ANSWER soil macropores, earth worms, and root channels Water pollution that originates from scattered and diffused sources of pollutants is known as ___________ pollution. - ANSWER nonpoint source pollutants The evapotranspiration (ET) from a pine forest was found to be 50 cm during a growing season. If the evaporation (E) from the soil surface during this period of time was 5 cm, what is the transpiration (T) loss from leaf surface? - ANSWER 45cm Irrigation type with the least field water use efficiency would be: - ANSWER flood irrigation ___________ is defined as the amount of a particular pollutant that a water body receives from pollution sources and still meets water quality standards for a specific purpose. - ANSWER total maximum daily load One of the major water pollution problems in Alabama is: - ANSWER fertilizer runoff from agricultural lands ____________ concentration in the soil atmosphere is many times greater than the air atmosphere. - ANSWER CO2 True or False: In general, soils will contain more CO2 in wet seasons compared to dry seasons. - ANSWER true True or False: Conversion of ammonium to nitrite then to nitrate are accomplished by nitrobacter and nitrosomonas bacteria, respectively. - ANSWER false Under anaerobic condition when there is no free O2 in the soil, soil microbes may use ___________ as an electron acceptor for oxidation. - ANSWER NO3-, Fe+3, Mn+4 Under optimum conditions, biochemical reactions will ______for every 10 OC increases in temperature. - ANSWER increase x2 A dry soil is a good insulator because it has... - ANSWER high specific heat capacity and low thermal conductivity True or False: Heat pumps can take advantage of the fact that subsoils are warmer in the winter and cooler in the summer than the atmospheric air. - ANSWER true Just before you reach the Mobile Bridge driving on I-65 S, you will see a sign that reads "Wetland". The soil you will find in the wetland is called: - ANSWER ????? in chapter 10? Which of the following is not a characteristic of soil colloids? a. very small size b. very small surface area c. sites for cation/anion exchange capacity - ANSWER very small surface area True or False: A 2:1 type silicate clay has one octahedral sheet sandwiched between two tetrahedral sheets. - ANSWER true ____________ is the amount of cation charges that a soil can hold at its current or apparent pH. - ANSWER effective CEC Which of the following isomorphous substitution creates a net negative charge on a neutral soil colloid? a. one K+1 ion for one Ca+2 ion b. one Al+3 ion for one Si+4 ion c. one Mg+2 ion for one Al+3 ion d. all of the above - ANSWER all of the above For organic soil colloids dominated with pH dependent charges, CEC will: a. decrease as pH increases b. increase as pH decreases c. remain the same d. none of the above. - ANSWER none of the above As soil pH increases, its AEC (anion exchange capacity) will -