name
1) Using this figure, give the elevation,
pressure, and total potential at the labeled
points A, B, C, and D. Assume that the
outflow, at point “D”, has an elevation of
0 cm.
2) Using this figure, give the elevation, pressure, and total potential
at the labeled points A, B, C, and D. Assume that the outflow, at
point “D”, has an elevation of 0 cm.
The potential difference through the soil is 30 cm, but
the distance through the soil is only 25 cm. The
gradient is therefore 6/5. So 60% of the way up into
the soil, the total potential must be 60% of 30, which is
18.
Point Pressure, cm Elevation, cm Total potential, cm
A 5 15 15
B 15 0 15
C 15 0 15
D 0 0 0
Point Pressure, cm Elevation, cm Total potential, cm
A 0 30 30
B 5 25 30
C 3 15 18
D 0 0 0
15 cm soil
5 cm water
A
D
B
C
10 cm soil
15 cm soil
5 cm water
A
D
B
C
10 cm soil
25 cm soil
5 cm water
A
D
BC
10 cm big pipe
10 cm
big pipe 25 cm soil
5 cm water
A
D
BC
10 cm big pipe
10 cm
big pipe
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