ACTUAL Questions and CORRECT
Answers
Which of the following is true with respect to global hydrologic cycle? - CORRECT
ANSWER - more than 95% of the global water is contained in the oceans
A Watershed is an area or ridge of land that separates waters flowing to different rivers or basins.
- CORRECT ANSWER - True
Since there is plenty of water in our region, there is no "water war" among Alabama, Florida and
Georgia. - CORRECT ANSWER - False
The approximate residence time for a water molecule in the ocean is about:
a. 5 days
b. 10 days
c. 10 years
d. none of the above - CORRECT ANSWER - none of the above
If all groundwater in Alabama is pumped to the surface, it will cover the state up to ________ ft.
a. 1
b. 5
c. 10
d. none of the above. - CORRECT ANSWER - none of the above
If precipitation in a given watershed is much smaller than the potential evapotranspiration, you
will have: - CORRECT ANSWER - deficit
, In the water balance equation, if evapotranspiration (ET), discharge (D), and soil stored (SS) are
given as 100, 40, and 20 cm, respectively, the amount of precipitation will be: - CORRECT
ANSWER - 160cm
Irrigation type with the most/highest field water use efficiency is: - CORRECT
ANSWER - drip irrigation
Water used to produce the food you eat on daily basis is much greater than the water you drink. -
CORRECT ANSWER - True
___________ 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. - CORRECT
ANSWER - Total maximum daily load
The ratio of which gases in soil air determines its state of aeration and suitability for aerobic
plant and animal life? - CORRECT ANSWER - CO2:O2
In general, soils will contain more CO2 in wet seasons compared to dry seasons. - CORRECT
ANSWER - True
Conversion of ammonium (NH4+) to nitrite (NO2-), and then to nitrate (NO3-) are accomplished
by nitrobacter and nitrosomonas bacteria, respectively. - CORRECT ANSWER - False
Under anaerobic condition when there is no free O2 in the soil, soil microbes may use
___________ as an electron acceptor for oxidation.
a. NO3-
b. Fe+3
c. Mn+4
d. all of the above - CORRECT ANSWER - all of the above