Soil Science WEB Exam 8 Fall 2007 Dept. of Soil, Water and Climate
Directions 1. There is ONE BEST answer per question. 2. Place your answers on answer sheet, you only need to turn in the answers.
Name _________________________
1.________ 2._______ 3._________ 4._______ 5.______ 6._______ 7._________ 8._______
9.______ 10._______ 11. _________ 12.________ 13.______ 14.________ 15._________
Total _____
Soil Survey, Legal Land Description and Land Capability Class-----------------------------------------------------------------------------------------------------------------------------
1. The soil survey of a county consists of the detailed map of the soil boundaries, text describing the soils and their pedons, and _________.
a) detailed soil fertility analysis
b) pictures describing the soil pedons
c) tables of physical and chemical data.
d) history of the agriculture of the county.
2. A soil survey that is made to show the soils of the north slope of Alaska on the Arctic National Wildlife Refuge might have a map scale of ______ since it will need a lot less detail than a regular soil survey.
a) 1: 1000 b) 1: 20,000 c) 1: 200,000 d) 1:10,000,000
3) On a soil map a road crosses the map and is found to be 5 inches in length. The map scale is 1:15840. The road is _____ miles long.
a) 0.32 b) 1.25 c) 3.16 d) 5.8
4. The base map for a modern soil survey is the ____________.
a) aerial photograph or orthophoto if available; b) county road map; c) 1:24000 topographic map; d) 1:62500 topographic map
5. The Department of Agriculture agency that is responsible for the National Soil Survey Program is the ________.
a) Environmental Protection Agency
b) Bureau of Soil Management
c) US Forest Service
d) Natural Resource and Conservation Service
6) The reason a soil scientists can not make a soil map that exactly shows the boundaries of every different soil is because ________.
a) the scale of the base map does not allow the complexity of the soils to be exactly shown.
b) the soil boundary on the ground can not be determined.
c) the quality of the aerial photograph does not allow accurate determination of the soil boundary.
d) every pedon is different from the next and thus it is too small to delineate as a soil map unit.
7. In a soil mapping unit the unnamed soil should occupy only ____ or less of the mapping unit.
a) 15% b) 25% c) 55% d) 75%
8. Inclusions in a soil mapping unit are soils that are: ___________.
a) similar to the named soil but does not have the same name.
b) just like the named soil except for surface texture.
c) areas that are not soil, for example bare rock land.
d) very different from the named soil in terms of color, texture, horizons or drainage.
Use the sample from the Soil Map for questions 9-11.
9. A map unit name is " Clarion loam, 2-6 % slope". The map symbol from the soil map is__?__
a) 86
b) 102B
c) 130
d) 956
10. The number "19" in the lower middle of the map is the _______.
a) Number for the principal meridian
b) Section number
c) Township number.
d) Range number
11. The sewage lagoon was dug to a depth of 4 feet. The soil map units that were most likely excavated for building the lagoon were _______.
a) 102B & 130
b) 130 & 134
c) 1075 & 86
d) 86 & 112
Use this Section 14 to answer the Legal Land Description Questions 12-15.
12. The legal land description for Square K is __?__.
a) NE 1/4 of the NE 1/4 of the SW 1/4 Sec. 14
b) SW 1/4 of the NE1/4 of the SW 1/4 Sec. 14
c) SW1/4 of the NE 1/4 Sec. 14
d) SE 1/4 of the SW 1/4 of the SW 1/4 Sec 14.
13. The letter in the NE1/4 of the SW 1/4 of the SE 1/4 is ___?__.
a) letter C; b) letter E; c) letter J; d) letter K
14. The total area of squares B + E + H + L=____?____ acres.
a) 200 b) 210 c) 230 d) 250
a) 4 miles b) 10 miles c) 16 miles d) 22 miles
15. Land capability class gives the land a ranking for use as cropland. The picture to the right most likely shows land that is classified as Land Capability Class __?__ agricultural cultivation.
a) I b) III c) V d) VI
