12/02/2025 11:48:23
Soils Exam 1
These two alkali metals are among the eight most abundant elements in Earth's
continental crust. Which is _____ and _____?
sodium
potassium
Weathering of parent material provides _______, while decomposition of dead plant
residue such as roots, leaves, stems, and wood is the source of _____.
mineral fraction
soil organic matter
Five major areas of Soil Science are concerned with studying:
Soil biological properties
Soil fertility and management
Classification of soils
Soil chemical properties
Soil physical properties
Weathering of parent material provides _______, while decomposition of dead plant
residue such as roots, leaves, stems, and wood is the source of _____.
mineral fraction
soil organic matter
These two alkali metals are among the eight most abundant elements in Earth's
continental crust. Which is _____ and _____?
sodium
potassium
The most important bioavailable pool of these two essential, non-mineral plant
macronutrients: ______ and ___________, in nature are molecules of this
polyatomic compound: ___________
hydrogen
oxygen
water
These two alkaline earth metals are among the eight most abundant elements in
Earth's continental crust AND essential plant macronutrients. Which is _____ and
_____?
calcium
magnesium
Period 3 elements are heavily represented among essential plant nutrients. Select all
period 3 micronutrients among following choices.
, 12/02/2025 11:48:23
chlorine (Cl)
A soil is considered _____ when the percent composition is 25% water, 45%
mineral, 5% organic, and 25% air
ideal
Soils are under threat from degradation. Select all forms of soil degradation from the
list.
deforestation
urbanization
poor ag practices
overgrazing
pollution
Soils provide ________ for ¼ of Earth's biodiversity.
habitat
Soils provide support for man-made ________
structures
Soil is the unconsolidated ___________ or __________ material on the immediate
surface of the earth that serves as a natural medium for the growth of land plants.
mineral
organic
Soil is the unconsolidated mineral or organic material on the immediate _______ of
the ________ that serves as a natural medium for the growth of land plants.
surface
earth
Topographic relief is considered to be _____ factor of soil formation.
environmental
Parent material is considered to be _____ factor of soil formation.
genetic
These two alkaline earth metals are among the eight most abundant elements in
Earth's continental crust. Which is _____ and _____?
magnesium (Mg)
calcium (Ca)
The most important bioavailable pool of this essential, non-mineral plant
macronutrient: ___________, in nature are molecules of this polyatomic gas:
__________
carbon
CO2
Two alkali metals are among the eight most abundant elements in Earth's continental
crust, but only ONE of them is an essential plant macronutrients. Which is?
potassium (K)
Period 2 elements are heavily represented among essential plant nutrients. Select all
period 2 micronutrients among following choices.
boron (B)
Soils Exam 1
These two alkali metals are among the eight most abundant elements in Earth's
continental crust. Which is _____ and _____?
sodium
potassium
Weathering of parent material provides _______, while decomposition of dead plant
residue such as roots, leaves, stems, and wood is the source of _____.
mineral fraction
soil organic matter
Five major areas of Soil Science are concerned with studying:
Soil biological properties
Soil fertility and management
Classification of soils
Soil chemical properties
Soil physical properties
Weathering of parent material provides _______, while decomposition of dead plant
residue such as roots, leaves, stems, and wood is the source of _____.
mineral fraction
soil organic matter
These two alkali metals are among the eight most abundant elements in Earth's
continental crust. Which is _____ and _____?
sodium
potassium
The most important bioavailable pool of these two essential, non-mineral plant
macronutrients: ______ and ___________, in nature are molecules of this
polyatomic compound: ___________
hydrogen
oxygen
water
These two alkaline earth metals are among the eight most abundant elements in
Earth's continental crust AND essential plant macronutrients. Which is _____ and
_____?
calcium
magnesium
Period 3 elements are heavily represented among essential plant nutrients. Select all
period 3 micronutrients among following choices.
, 12/02/2025 11:48:23
chlorine (Cl)
A soil is considered _____ when the percent composition is 25% water, 45%
mineral, 5% organic, and 25% air
ideal
Soils are under threat from degradation. Select all forms of soil degradation from the
list.
deforestation
urbanization
poor ag practices
overgrazing
pollution
Soils provide ________ for ¼ of Earth's biodiversity.
habitat
Soils provide support for man-made ________
structures
Soil is the unconsolidated ___________ or __________ material on the immediate
surface of the earth that serves as a natural medium for the growth of land plants.
mineral
organic
Soil is the unconsolidated mineral or organic material on the immediate _______ of
the ________ that serves as a natural medium for the growth of land plants.
surface
earth
Topographic relief is considered to be _____ factor of soil formation.
environmental
Parent material is considered to be _____ factor of soil formation.
genetic
These two alkaline earth metals are among the eight most abundant elements in
Earth's continental crust. Which is _____ and _____?
magnesium (Mg)
calcium (Ca)
The most important bioavailable pool of this essential, non-mineral plant
macronutrient: ___________, in nature are molecules of this polyatomic gas:
__________
carbon
CO2
Two alkali metals are among the eight most abundant elements in Earth's continental
crust, but only ONE of them is an essential plant macronutrients. Which is?
potassium (K)
Period 2 elements are heavily represented among essential plant nutrients. Select all
period 2 micronutrients among following choices.
boron (B)
