Well A is drilled down to an elevation of 200m above sea level and has a water
column of 50m high. Well B is 2.5km away and is drilled to an elevation of 220m.
The pressure at the bottom of well be is approximately 100kPa. The hydraulic
gradient between Well A and Well B is:
Question options...
Which reservoir of the hydrosphere would you describe as containing the
largest fraction of Earth's liquid freshwater?
Question 1 options:
A)
glaciers and ice sheets
B)
groundwater
,C)
soil moisture
D)
lakes and reservoirs
✓✓✓✓~ A
Considering their relative density and solubility in water, how would hazardous
substances behave that accidentally entered a groundwater system?
Question 2 options:
Gasoline and kerosene would float on the water table, but most pesticides break
down chemically when they reach the water table.
, Sulphuric and nitric acids would sink to the bottom of the aquifer; kerosene
would accumulate as a layer just below the water table.
Gasoline and kerosene would float on the water table; ethyl alcohol would
dissolve and disperse in the groundwater.
E-coli bacteria may build up in groundwater but can be diluted or rinsed away
with sufficient input of natural surface waters such as farm runoff.
✓✓✓✓~ C
DNAPLS
Question 3 options:
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