Soil Science

Question 0

What is the smallest soil particle?

Answer 0

Clay

Question 1

What is the largest particle of soil?

Answer 1

Sand

Question 2

Which soil particle will allow for the greatest amount of drainage?

Answer 2

Sand

Question 3

What are three methods of determining soil texture?

Answer 3

Shake test, ribboning, soil texture triangle.

Question 4

Acid rain is an example of what type of weathering?

Answer 4

Chemical

Question 5

Water freezing in between rock is an example of which type of weathering?

Answer 5

Physical

Question 6

The physical property of soil which is determined by particle size.

Answer 6

Texture

Question 7

A measure of soil acidity.

Answer 7

pH

Question 8

Water carrying off nutrients through the soil.

Answer 8

Leaching

Question 9

Once was living.

Answer 9

Organic

Question 10

Pockets between soil particles.

Answer 10

Pore space (pores)

Question 11

Soil particle with least amount of pore space.

Answer 11

Clay

Question 12

Type of soil that is made from non-living sources.

Answer 12

Inorganic

Question 13

All organic matter has this element in common.

Answer 13

Carbon

Question 14

Layers of the soil profile.

Answer 14

Horizons

Question 15

Must have a microscope to see ______ organisms.

Answer 15

Micro

Question 16

Low end of the pH scale.

Answer 16

Acidic

Question 17

Must add this to lower alkalinity of soil.

Answer 17

Sulfur

Question 18

High end of pH scale.

Answer 18

Alkaline

Question 19

Must add this to raise pH of soil.

Answer 19

Lime

Question 20

Perfect combination of sand, silt, and clay.

Answer 20

Loam

Question 21

The O horizon is mainly composed of?

Answer 21

Organic matter

Question 22

The C horizon is composed of?

Answer 22

Subsoil

Question 23

Which soil texture will hold water the strongest?

Answer 23

Clay

Question 24

What could you infer from gray colored soil?

Answer 24

Poor drainage

Question 25

What could you infer from a dark colored soil?

Answer 25

Good amount of organic matter

Question 26

What could you infer from red soils?

Answer 26

High iron content

Question 27

Why are soils high in iron red?

Answer 27

Oxidization of iron (rust)

Question 28

What factor determines a soil moisture holding capacity?

Answer 28

Texture

Question 29

How does compaction effect soil productivity

Answer 29

Decrease pore space, less water holding capacity,less plant growth

Question 30

How does erosion effect soil productivity?

Answer 30

Decrease in nutrients/organic matter content, less efficient plant growth