1. Soil is derived from weathered ___.

a. rocks

b. minerals

c. OM

d. a & b

2. A study of rock is known as ___.

a. minerology

b. petrology

c. rockology

d. lithology

3. The most abundant group of minerals in the soil is ____.

a. Silicates

b. carbonates

c. oxide

d. halides

4. The most abundant gas in the soil atmosphere is ____.

a. CO2

b. O2

c. N2

d. A

5. A civil engineer is a ____.

a. Edaphologist

b. Pedologist

c. Petrologist d. Anthropologist

6. The soil is called a _________ because it comes from weathering of naturally occurring

rocks and minerals.

a. Dynamic body b. Natural Body

c. Natural science

d. Weathered rock

7. Loose earth materials above solid rock.

a. Regolith

b. Solum

c. Pedon

d. profile

8. The original source of most organic matter in soil is ___.

a. Plant residue

b. Bodies of dead animals and insects

c. Soil inhibiting microorganisms

d. Rocks

9. The volume percentage of mineral matter in the soil composition.

a. 45%

b. 30%

c. 25%

d. 5%

10. Mineral composition of soil.

a. Clay

b. sand & rock

c. silt

d. all of the above​