LESSON 2

Question 1

What are the 12 major soils of the world?

Answer 1

1. Alfisols
2. Andisols
3. Aridisols
4. Entisols
5. Gelisols
6. Histosols
7. Inceptisols
8. Mollisols
9. Spodosols
10. Oxisols
11. Ultisols
12. Vertisols

Question 2

Moderately leached soils often found in temperate forests. Shallow penetration of humus, translocation of clay; well developed horizon

Answer 2

Alfisols

Question 2

Soil formed in volcanic ash, not highly weathered, upper layers dark colored, low bulk density

Answer 2

Andisols

Question 2

Desert soils, low in organic matter, high in base content, prone to the process of salinization.

Answer 2

aridisols

Question 3

soil with little or no morphological (horizon) development, associated with recently deposited sediments

Answer 3

entisols

Question 3

soils with permafrost or soil temperature of 0 degrees or less than 2 m of the surface, formed through the process of gleization

Answer 3

gelisols

Question 4

organic soils, high content of organic matter, formed in areas with poor drainage, big and muck soils

Answer 4

Histosols

Question 5

Weakly developed soils. Young soils that are more developed than entisols, often shallow, moderate development of horizon

Answer 5

Inceptisols

Question 5

Grassland soils, surface horizons dark brown to black with soft consistency, rich in bases, soil of semi-humid regions, prone to the process of calcification

Answer 5

Mollisols

Question 5

Acidic, sandy forest soils under conifers. Lightly gray, whitish surface horizon on top of the black or reddish B horizon. High in extractable iron and aluminum, formed through the process of podzolization

Answer 5

spodosols

Question 5

Very weathered soils of tropical land and subtropical environments; red, yellow or gray, rich in kalolinate, iron oxides, and often humus

Answer 5

Oxisols

Question 5

Acidic, strongly leached, older soils. strong clay translocation, low base content, humid warm climate, formed by process of laterization

Answer 5

Ultisols

Question 5

Mollisol is formed by the process of

Answer 5

Calcification

Question 5

Aridisols is formed by the process of

Answer 5

Salinization

Question 5

Clayey soils that swell when wet. Dark clay shows significant expansion and contraction due to wetting and drying

Answer 5

Vertisols

Question 5

Spodosol is formed by the process of

Answer 5

Podzolization

Question 5

Ultisol is formed by the process of

Answer 5

Laterization

Question 5

What type of soil is less developed?

Answer 5

Entisols

Question 5

Gelisol is formed by the process of

Answer 5

Gleization

Question 6

What type of soil is highly developed?

Answer 6

Oxisols

Question 7

Philippine major soil type (Land area covered)

Answer 7

1.Ultisols (41.5 %)
2. Inceptisols (13.7%)
3. Alfisols (9.9%)
4. Vertisols (3.6%)
5. Entisols (2.5%)
6. Oxisols (0.3%)
7. Unsurvyed Mountains (28.6%)

Question 8

Inceptisols is found in locations of?

Answer 8

Samar
Agusan
Iloilo
Pangasinan
Zambales
Mindoro
Palawan

Question 9

Ulltisols is found in locations of?

Answer 9

Rizal
Laguna
Zambales
Cavite
Bulacan
Misamis Oriental
Zamboanga
Davao
Oriental Mindoro

Question 10

Alfisols is found in locations of?

Answer 10

Ilocos Sur/Norte
Occidental Mindoro
Batanes
Quezon
Cagayan

Question 11

Vertisols is found in locations of?

Answer 11

Bulacan Cavite Bataan Cagayan Zambales Nueva Ecija La Union Tarlac

Question 12

Land use is for pineapple, cassava, sugarcane, banana, and forest tree species

Answer 12

Ultisol

Question 12

Entisols is found in locations of?

Answer 12

Surigao Leyte Zambales Bicol Ilocos Sur/ Norte Palawan Pangasinan Samar Iloilo Agusan

Question 13

Oxisol is found in locations of?

Answer 13

Rizal Northern Quezon Palawan

Question 14

Land use is for paddy rice, diversified crops, fruit tress

Answer 14

Inceptisols

Question 15

Land use if for Fruit trees and Banana

Answer 15

Alfisols

Question 16

Land use is for rice and some vegetable

Answer 16

Vertisols

Question 17

Land use is for diversified crops in the alluvial plain, fruit trees, paddy rice, coconuts under pasture in the hilly to mountainous landscape

Answer 17

Entisol

Question 18

Land use is for generally under cogon, talahib, second growth blushes and shrubs and tree type species

Answer 18

Oxisols

Question 19

2 types of weathering processes

Answer 19

1. Mechanical Weathering 2. Chemical Weathering

Question 20

The physical breakdown of rock into smaller pieces

Answer 20

Mechanical Weathering

Question 21

Factors that affect/influence mechanical weathering

Answer 21

Wind, Water, Temperature

Question 22

Alters and breaks down particle through reaction involving water, oxygen and acids produced by soil organisms and organic matter

Answer 22

Chemical Weathering

Question 23

Factors that influence soil formation

Answer 23

1. Parent Material 2. Biotic Factors 3. Climate 4. Topography 5. Time