Exam 1

Front 1

List the 9 essential MICRO nutrients.

Back 1

Manganese, Boron, Mo, Iron, Copper, Zinc, Nickel, Chlorine

Front 2

List the essential MACRO nutrients.

Back 2

Magnesium, Phosphorus, Potassium, Carbon, Oxygen, Hydrogen

Front 3

List the quasi-essential elements.

Back 3

Si, Co, N

Front 4

List the eight names of the sub-types of structures.

Back 4

Prismatic, platy, sub-angular blocky, columnar, crumb, granular, wedge, angular blocky

Front 5

What are the two types of nonstructures?

Back 5

Massive and single grain

Front 6

Two materials that can stabilize structural units in the soil

Back 6

Oxides and carbonates

Front 7

Soil aggregates are ________ particles.

Back 7

Secondary

Front 8

Processes that form soil aggregates through the movement of particles

Back 8

Wetting and drying, freezing and thawing, faunal pedoturbation, floral pedoturbation

Front 9

T/F All else being equal, well aggregated soil will be more healthy, have a lower bulk density, and a higher %PS than poorly aggregated soil.

Back 9

True

Front 10

T/F Soils may provide a habitat that will host a perpetuate the existence of disease organisms.

Back 10

True

Front 11

_______ soils purify and store water

Back 11

Mineral

Front 12

T/F Soils were the source of discovery of the classic antibiotics such as penecillin.

Back 12

True

Front 13

Examples of the importance of soil

Back 13

Hold tent pegs that hold up a tent for a camper, nutrients make a farmers crop grow

Front 14

Soil is a(n) ________ factor affecting the mechanical support of plants.

Back 14

External

Front 15

T/F Soils help burrowing animals protect themselves

Back 15

True

Front 16

T/F Soils great beauty by growing forests, flowers, etc

Back 16

True

Front 17

T/F Soils were the ultimate source of production of dinosaurs, etc that were converted into fossil fuels such as oil

Back 17

True

Front 18

T/F Soil is an important component of ecosystems

Back 18

True

Front 19

Define bulk density

Back 19

Mass per unit volume

Mass of dry soil / volume of field moist soil

Front 20

What are the four ecosystem services?

Back 20

Provisioning, regulating, supporting, and cultural

Front 21

T/F Soil air usually has a higher carbon dioxide content than the air in the atmosphere.

Back 21

True

Front 22

Soil colors are scientifically described by _______ color designations such as 10YR3/4

Back 22

Munsell

Front 23

Which type of soil structure is typically found in an undisturbed surface soil (A horizo) of a native undisturbed forest?

Back 23

Spheroidal

Front 24

T/F Soil color may help us understand the water relationships in a soil thrift the presence or absence of mottles and/or gleying.

Back 24

True

Front 25

T/F Soil color may help us understand the oxidation/reduction relationships in a soil.

Back 25

True

Front 26

Soil color may be determined in part by the presence or absence of

Back 26

Organic matter, Iron oxides such as limonite and hematite

Front 27

T/F Soil color may affect radiation energy absorption and thus affect soil temperature.

Back 27

True

Front 28

Name things that affect soil temperature

Back 28

Isolation, thermal conductivity of soil materials, heat capacity (specific heat) of soil materials, ground covers, slope, aspect, length of daylight period, water content

Front 29

T/F The liquid limit and the plastic limit are soil engineering terms.

Back 29

True