Lesson 5

Question 1

What is Colluvium

Answer 1

is a general name for loose, unconsolidated sediments that have been deposited at the base of hillslope

Carried by gravity

Question 2

How does typography effect soil

Answer 2

Effects rate and quality of soil development and erosion

Question 3

Topography facing

Answer 3

North face
West face
South face

Question 4

Biotic factors are

Answer 4

Biotic factors, such as burrowing organisms, plant roots, and soil microorganisms that are central to forming and stabilizing soil aggregates both physically and chemically

Atmospheric carbon
Carbon needed for soil formation

Question 5

What is the chain reaction for organic matter

Answer 5

Chemical alteration of organic matter, physical fragmentation and finally release of mineral nutrients

biological process helps process as soil organisms (microorganisms, earthworms, microarthropods, ants beetles etc) that perform the chemical and physical changes

decomposed by soil microbes
effected by Soil acidity

Question 6

The type of plant partly determines

Answer 6

Degree of decomposition

Question 7

Air and water in soil is determined by

Answer 7

Pore Spaces

Question 8

Pore spaces determine

Answer 8

The amount of water and air in soil

Question 9

What is the size of large pore spaces

Answer 9

Greater then .06mm

Question 10

Large pores after heavy rain fill then

Answer 10

Drained of water then filled by air

Question 11

Small pores size =

Answer 11

Less then .06mm

Question 12

How does water act in small pores

Answer 12

Holds water against gravity
Pulls water up by capillary actions