IB ESS Topic 5.1 and 5.2
What is soil (5) - correct answer ✔✔Place to grow food for other organisms, a habitat, hold waters and
nutrients, stores and transfers heat, and a place where life processes occur
Components of soil - correct answer ✔✔Rock, humus, water, air, soil organisms
The _____ of soil influences - correct answer ✔✔Quality of soil influences the primary productivity of an
area
Soil Profile order - correct answer ✔✔O, A, E, B, C, R
Soil layer o - correct answer ✔✔(Organic) freshly fallen leaves, twigs, animal waste, fungi
A - correct answer ✔✔(Humus) mixture of partially decomposed organic matter
B - correct answer ✔✔(Subsoil) nutrients leaches from A Plant Roots (clay and iron)
C - correct answer ✔✔Weathered rock largely inorganic material
R - correct answer ✔✔Parent material bedrock
soil particles - correct answer ✔✔Clay, silt, sand, and gravel
Properties of clay - correct answer ✔✔< 0.002mm in diameter, feels thick and sticks, high porosity
(micropores), low permeability, high nutrients but inaccessible
Properties of silt - correct answer ✔✔0.002 - 0.05 mm in diameter, feels slippery and holds together
, Properties of sand - correct answer ✔✔0.05 - 2 mm in diameter, falls apart, High porosity (macropores),
high permeability, high leaching
Properties of gravel - correct answer ✔✔rapid drainage
Structure and properties of soil types - correct answer ✔✔Sand, loam, and clay
Which soil type is best for agrixlture - correct answer ✔✔Loam because it has characteristics of all three
soil particles
Rock particles provide - correct answer ✔✔Skeleton of the soil
Humus - correct answer ✔✔Plant and animal matter in the process of decomposition
Component of soil: water - correct answer ✔✔Dissolved mineral salts more through soil
Rapid downward movement of water = leaching
Components of soil: soil organisms - correct answer ✔✔Soil invertebrates break down dead organic
matter into smaller particles
the sustainability of terrestrial food production systems is influenced by - correct answer ✔✔socio-
political, economic, and ecological factors
Commercial farming (Medcs) : scale - correct answer ✔✔large
System:
Shifting Cultivation (slash and burn)
Where
Amazon Rainforest
Type
What is soil (5) - correct answer ✔✔Place to grow food for other organisms, a habitat, hold waters and
nutrients, stores and transfers heat, and a place where life processes occur
Components of soil - correct answer ✔✔Rock, humus, water, air, soil organisms
The _____ of soil influences - correct answer ✔✔Quality of soil influences the primary productivity of an
area
Soil Profile order - correct answer ✔✔O, A, E, B, C, R
Soil layer o - correct answer ✔✔(Organic) freshly fallen leaves, twigs, animal waste, fungi
A - correct answer ✔✔(Humus) mixture of partially decomposed organic matter
B - correct answer ✔✔(Subsoil) nutrients leaches from A Plant Roots (clay and iron)
C - correct answer ✔✔Weathered rock largely inorganic material
R - correct answer ✔✔Parent material bedrock
soil particles - correct answer ✔✔Clay, silt, sand, and gravel
Properties of clay - correct answer ✔✔< 0.002mm in diameter, feels thick and sticks, high porosity
(micropores), low permeability, high nutrients but inaccessible
Properties of silt - correct answer ✔✔0.002 - 0.05 mm in diameter, feels slippery and holds together
, Properties of sand - correct answer ✔✔0.05 - 2 mm in diameter, falls apart, High porosity (macropores),
high permeability, high leaching
Properties of gravel - correct answer ✔✔rapid drainage
Structure and properties of soil types - correct answer ✔✔Sand, loam, and clay
Which soil type is best for agrixlture - correct answer ✔✔Loam because it has characteristics of all three
soil particles
Rock particles provide - correct answer ✔✔Skeleton of the soil
Humus - correct answer ✔✔Plant and animal matter in the process of decomposition
Component of soil: water - correct answer ✔✔Dissolved mineral salts more through soil
Rapid downward movement of water = leaching
Components of soil: soil organisms - correct answer ✔✔Soil invertebrates break down dead organic
matter into smaller particles
the sustainability of terrestrial food production systems is influenced by - correct answer ✔✔socio-
political, economic, and ecological factors
Commercial farming (Medcs) : scale - correct answer ✔✔large
System:
Shifting Cultivation (slash and burn)
Where
Amazon Rainforest
Type
