Department of Geosciences
North Dakota State University
GEOLOGY 105
SELF-TEST SITE


NDSU

Soils Self-Test

Special Instructions:
Using your mouse, click on the one, BEST answer. Upon completion of the exam, click the SUBMIT button, and the exam will be graded for you. You will also have the opportunity to review how well you answered each question.
1. Litter is a characteristic of which soil horizon?:
A
B
C
O
E

2. The Zone of Accumulation refers to which soil horizon?:
A
B
C
O
E

3. Given a soil developed from the weathering of granite. Which one of the following minerals would characterize the A-horizon?:
halite
calcite
olivine
quartz
iron oxides (hematite, etc.)

4. Laterites are _______ soils with extraordinarily thick _____-horizons:
prairie, O
prairie, B
prairie, A
tropical, A
tropical, B

5. Resistant minerals, but without humus. This description would best apply to which soil horizon?:
A
B
C
O
E

6. To which region should one go to see the BEST-developed A-horizons?:
forested lands of the eastern U.S.
forested lands of the Pacific Northwest
prairies of central U.S.
woodlands of northwestern Minnesota
tropical rain forests of Costa Rica

7. Caliche refers to:
partially-decayed leaf material
well-decayed organic material
brick-red clays stained with iron oxides
accumulations of carbonates in soils
deeply-leached aluminum ores in soils


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