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Practice Quiz 3

1. According to the water budget graph:

the surplus is most intense in January.
the deficit lasts for about 5 months.
May is a month of soil moisture utilization because P is less than PE, and PE and AE are equal.
all of the above.

Graph: water budget

 

Water Budget for Trout Lake, Ontario (cm) 53.5N
(field capacity = 35 cm)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
P 38 27 21 29 50 90 80 89 80 43 55 30 632
PE 0 0 0 0 38 88 123 119 61 10 0 0 439
P-PE 38 27 21 29 12 2 -43 -30 19 33 55 30 XXX
DST 0 0 0 0 0 0     19 16 0 0 XXX
ST 35 35 35 35 35 35     19 35 35 35 XXX
AE 0 0 0 0 38 88     61 10 0 0  
D 0 0 0 0 0 0     0 0 0 0  
S 38 27 21 29 12 2     0 17 45 30  

 

2. Which of the following is correct for the Trout Lake water budget table?

The change in storage in July equals 43.
There should be some deficit in August.
The change in storage in October should really be 33 not 16.
Flooding is probably a serious hazard in January and February.

 

3. Using the soil texture triangle, a soil with 20% clay, 40% sand and 40% silt would be classified as a:

silt loam
loam
clay loam
sandy loam

Picture (542x380, 7.8Kb)

 

4. In general, for most soils, the infiltration rate over the course of a storm event will:

eventually level off.
constantly increase.
constantly decrease.
show no particular pattern of change over time.

 

5. Clay has a _________ field capacity and a ________ infiltration capacity.

low; low
low; high
high; high
high; low

 

6. Although Astoria, Oregon and Brest, France are both located very close to a west coast, Astoria receives much more precipitation than Brest because:

Pacific air masses contain more moisture than Atlantic air masses.
air in Astoria is less stable than air in Brest.
Astoria gets orographic precipitation whereas Brest does not.
both (a) and (b) are true.

 

7. Coastal locations adjacent to warm ocean currents _____________________ than coastal locations adjacent to cold ocean currents.

are generally drier
have less stable atmospheric conditions
have warmer temperatures
both (b) and (c) are true.

 

Score =
Correct answers:


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Karen A. Lemke: klemke@uwsp.edu
Last revised March 23, 2010