Test 1

Question 1

Avalanches are made up of this coarse rock fragment

Answer 1

Colluvium

Question 2

Stream deposits found at the base of a mountain

Answer 2

Alluvial fans

Question 3

Sediment carried and deposited by flood water

Answer 3

Floodplain deposits

Question 4

Wind blown Allophone clay deposits

Answer 4

Volcanic ash

Question 5

Wind blown material made of silt, fine sand and coarse clay

Answer 5

Loess

Question 6

Soil formed in place

Answer 6

Residual

Question 7

Materials deposited directly by ice

Answer 7

Glacial till

Question 8

Lucustrine deposits

Answer 8

Soils that were deposited and developed as glacial lakes dried up

Question 9

Peat

Answer 9

Accumulations of organic material usually building up in anaerobic conditions…(wet)

Question 10

6 main roles of soil in an ecosystem

Answer 10

1. Gas exchange
2. Plant medium
3. Construction surface
4. O.M. Recycling
5. Houses living organisms
6. Water filtration

Question 11

What is the broadest category in the soil taxonomy hierarchy

Answer 11

Order

Question 12

What is the most specific category in the soil taxonomy hierarchy

Answer 12

Series

Question 13

What are 4 practices that farmers are using to improve soil health

Answer 13

1. Cover cropping
2. Conservation tillage
3. Introducing O.M.
4. Diversity through crop rotation

Question 14

God calls us to be good ________ of the land

Answer 14

Stewards

Question 15

A densely compact layer of materials found in the subsoil

Answer 15

Fragipan

Question 16

The most productive and highly fertile of all the soil orders

Answer 16

Mollisols

Question 17

What do mottles indicate in a soil?

Answer 17

Poor drainage

Question 18

The ease with which the soil is tilled

Answer 18

Tilth

Question 19

The unsaturated zone in the soil is termed as the _______ zone, it lies between the earths surface and the water table

Answer 19

Vadose

Question 20

The relative proportions of sand, silt and clay in a soil is called soil ________.

Answer 20

Texture

Question 21

A clump of soil is called a _____ or __________.

Answer 21

Ped or aggregate

Question 22

The type of soil texture in which the properties of the soil separates are exhibited equally

Answer 22

Loam

Question 23

Two colloidal components in soil are _____ and ______

Answer 23

O.M. And clay

Question 24

The soil property that is most easily changed is

Answer 24

Structure

Question 25

The component of soil that most affects topsoil fertility, water infiltration, tilth and nutrient holding capacity is

Answer 25

O.M.

Question 26

The layers of contrasting material found when one digs a hole in the soil are called

Answer 26

Horizons

Question 27

A soil profile consists of

Answer 27

The set of layers seen in a vertical cross-section of soil

Question 28

Compared to silt, clay sized soil particles are characterized by

Answer 28

Greater attraction for water, greater capacity to hold plant nutrients

Question 29

Increasing the organic matter content of the soil is likely to

Answer 29

Increase the soil’s water Holding capacity

Question 30

In a given soil the Ap horizon tells us that

Answer 30

This is a soil that doesn’t have an O horizon, this is the soil that has been tilled at one time

Question 31

Information about conditions at 2 to 4 m deep in a soil is most helpful for understanding

Answer 31

How to best design a building foundation

Question 32

Igneous rocks can best be characterized as

Answer 32

Rocks formed when molten magma solidifies

Question 33

Mechanical weathering processes result in

Answer 33

The disintegration of rocks due to differential expansion of minerals

Question 34

Which of the following is not considered one of the five major factors influencing soil formation.... Native parent materials, living organisms, climate, native plant growth, topography

Answer 34

Native plant growth

Question 35

The map units on a detailed soil map in a county soil survey report are most likely to be labeled with names from which category of soil taxonomy

Answer 35

Series

Question 36

A sticky, putty like feel indicates a high percentage of which soil separate

Answer 36

Clay

Question 37

Which type of soil structure is typically found in surface soil (A horizons)?

Answer 37

Granular

Question 38

A soil order that is formed under Arid conditions is a

Answer 38

Aridisol

Question 39

Young soil developed in cold temperatures and frozen conditions with slow formation, with a permafrost layer

Answer 39

Gelisol

Question 40

In which of the following epipedons is the organic matter level generally highest? Mollic, Umbric, histic, ochric, melanic

Answer 40

Mollic

Question 41

The three soil orders found in Missouri are:

Answer 41

Mollisol, ultisol, alfisol

Question 42

What would you, as a home gardener, considere the three best things you could do with regard to managing the soil structure in your home garden?

Answer 42

Organic matter, no till, cover cropping

Question 43

In the five factors affecting soil formation

Answer 43

Time, typography, parent material, living organisms, climate