Master Exam Terms part 1

Question 1

Soil

Answer 1

A naturally occurring mineral and organic material occurring at the surface of the earth

Question 2

Infiltration

Answer 2

The downward movement of water into the soil

Question 3

Control Section

Answer 3

Class or range of soil features

Question 4

Osmotic Potential

Answer 4

Results from the presence of solutes in water

Question 5

CEC

Answer 5

Sum total of exchangeable cations that a soil can absorb at a given pH

Question 6

Anecic Earthworm

Answer 6

Make vertical burrow that can be several meters deep “nightcrawlers”

Question 7

Isomorphous Substitution

Answer 7

The replacement of one atom for another of similar size in a crystal lattice without disrupting or changing the crystal structure

Question 8

Humus

Answer 8

Decomposed organic material

Question 9

Soil Fertility

Answer 9

The quality of soil that enables it to provide essential chemical elements in quantities and proportions for the growth of specified plants

Question 10

Erodibility

Answer 10

a function of the item being eroded, texture, surface cover, etc

Question 11

t-factor

Answer 11

The rate of erosion deemed sustainable